System for treating wastewater from electronics and semiconductor manufacturing facilities

Abstract

A system for treating wastewater from electronics and semiconducting companies has at least one reactor tank assembly and at least one wastewater delivery kit consisting of an inflow conduit and valve assembly, an outflow conduit and valve assembly, and a return conduit and valve assembly, and a pump assembly. The at least one reactor tank assembly is interchangeably operable in at least one or more of the following: operation alone, operation as a series of reactor tank assemblies, and operation in parallel with other reactor tank assemblies. At least one jet mixer assembly is operatively disposed on a bottom portion of the reactor tank assembly and is designed for mixing wastewater in the reactor tank assembly. At least one computer-monitored pH sensor assembly is disposed at least partially within the wastewater stream. At least one or more of the acid and caustic from the respective storage tank is used to change the pH of the wastewater until the wastewater is treated and suitable for discharge.

Description

Technical Field

[0001] The present inventive concept is directed to a system for treating wastewater, particularly wastewater from electronics and semiconductor manufacturing facilities, but also wastewater from other facility types. Background Art

[0002] Electronics, semiconductor companies and many other businesses use acid waste neutralization systems (AWN) to treat the millions of gallons of wastewater that may flow from their manufacturing facilities each day. The wastewater, which is essentially particle-free, is deionized. The pH of this wastewater can range widely from high to low. By regulation, the pH of the discharge must be approximately 7.0.

[0003] Conventional wastewater treatment systems for acidic waste neutralization have two to three reactor tank assemblies in series with wastewater residence times of 30 to 90 minutes during treatment. These reactor tank assemblies can hold over a hundred thousand gallons of wastewater and typically treat flows between 1,000 and 10,000 gallons per minute (GPM). In addition, these reactor tank assemblies have overhead mounted mixers and have acid and caustic delivery systems to neutralize the water to within an acceptable range across 7.0 pH.

[0004] In manufacturing facilities where production is environmentally controlled and creating new space may be difficult, saving space is very important. Conventional systems have several disadvantages. 1) The size of the system for the wastewater treatment reactor tank assembly capable of handling 2500 GPM is about 30 feet wide, 100 feet long and 30 to 50 feet high. This footprint involves more than one reactor, and the radius of each reactor is about 15 feet. 2) The wastewater treatment system is built on site because many parts are too large to be transported on most roads if pre-assembled. Just-in-time production drives up costs, and production time is longer than that which can be achieved using workshop manufacturing efficiency. 3) The reactor tank assembly is usually operated at 100% capacity. There is no flow balancing, which means that the system is limited to and must be able to handle the peak flow delivered from the manufacturing facility. 4) The design of the entire wastewater treatment system is to use gravity to power the outflow, which requires ensuring that all conveying devices are designed so that gravity feeds the inflow and outflow of the system. 5) Because wastewater treatment systems are already designed to handle the expected peak flows for each given manufacturing facility during installation, expansion of a manufacturing facility may be difficult due to the need to increase the capacity of the existing wastewater treatment system and the need to work around potentially limited sewer capacity and limited available installation floor space to expand the wastewater treatment system.

[0005] Therefore, there is a need in the market for an improved wastewater treatment system for electronics and semiconductor manufacturing facilities that simplifies the ability to expand water treatment capacity and reduces the footprint of the equipment and the water pressure required to move the wastewater through the system. Summary of the invention

[0006] A wastewater treatment system and method for electronic and semiconductor manufacturing facilities is disclosed that is designed, in one embodiment, to reduce the wastewater residence time in the system from 10 to 30 minutes to 5 to 15 minutes through time-efficient kinetics, thereby reducing the footprint of a conventional wastewater treatment system from 25 feet by 100 feet to about 25 feet by 25 feet for the disclosed wastewater treatment system. Similar reductions can occur for other embodiments of different sizes. The shorter wastewater residence time of a representative embodiment reduces the footprint of a 2500 GPM system to 25 feet by 25 feet (for a single sequence reactor tank assembly system) or 25 feet by 50 feet (for a dual sequence reactor tank assembly system).

[0007] In one embodiment of the disclosed wastewater treatment system, the reactor is designed with a buffer zone that is suitable for maintaining variable wastewater levels. This means that manufacturing facilities can use smaller reactors, level controls, and variable speed circulation pump assemblies to manage the wastewater treatment process and adapt to changing wastewater flows.

[0008] In one embodiment of the disclosed wastewater treatment system, at least one circulating pump assembly is used to mix and recycle wastewater, while the system adjusts the pH above or below the pH allowed for discharge. Mixing is further performed by a reactor tank assembly jet mixer disposed at the bottom of each reactor tank assembly. Mixing ejectors are further used to influence pressure and water flow. In one embodiment, 2 to 10 mixing ejectors enhance wastewater mixing in addition to the circulation generated by the circulating pump assembly alone. Therefore, the generation of water flow does not require a mechanical (propeller) mixer.

[0009] Embodiments of the disclosed wastewater treatment system are designed to be compact enough to allow a prefabricated system to be transported by truck on typical roads. Thus, the disclosed wastewater treatment system can be produced from pre-designed and pre-packaged modules and can be built in parallel with preparation of the installation site at a receiving electronic and semiconductor manufacturing facility.

[0010] Embodiments of the disclosed wastewater treatment system abandon reliance on gravity to move wastewater and instead pump wastewater through the lines of a piping system. By increasing the pressure of the water flow, flow can be increased compared to existing piping systems.

[0011] Embodiments of the disclosed wastewater treatment system provide modularity and associated scalability. In addition, the installation of parallel sequence reactor systems as needed can also facilitate system expansion compared to conventional gravity-based systems with similar capacity.

[0012] Embodiments of the disclosed wastewater treatment system are designed to have operational flexibility by having a capacity buffer designed to handle and manage variable wastewater flows. Multiple reactor tank assemblies of the disclosed wastewater treatment system can be installed in series for fine-tuning wastewater output, or the multiple reactor tank assemblies can be installed in parallel, thereby allowing the flow rate to be essentially doubled compared to a single reactor tank assembly system for each parallel installed reactor tank assembly. The sequence of the multiple reactor tank assemblies correspondingly increases the available wastewater flow capacity. In one embodiment of the wastewater system, the wastewater treatment flow can be set to flow through the sequence of the multiple reactor tank assemblies sequentially or in parallel, as needed, with the flow rate varying from about 2500 GPM to 10000 GPM.

[0013] One embodiment of the system for treating wastewater has at least one reactor tank assembly. The at least one reactor tank assembly can be operated in at least one or more of the following ways: the at least one reactor tank assembly is operated individually, the at least one reactor tank assembly is operated as a series of reactor tank assemblies, and the at least one reactor tank assembly is operated in parallel with other reactor tank assemblies. At least one inflow pipe and valve assembly is connected to the at least one reactor tank assembly and is designed to guide wastewater into the at least one reactor tank assembly through at least one inlet manifold port assembly disposed on the top portion of the reactor tank assembly. At least one outflow pipe and valve assembly is connected to at least one outlet port assembly of the at least one reactor tank assembly and is designed to guide wastewater out of the at least one reactor tank assembly. At least one return pipe and valve assembly of the at least one outflow pipe and valve assembly is designed to guide at least a portion of the wastewater flowing out of the at least one reactor tank assembly back into the at least one reactor tank assembly as needed.

[0014] In this embodiment of the system for treating wastewater, the at least one circulation pump assembly is disposed on the at least one outflow pipe and valve assembly. In this embodiment, there is at least one carrier injection pump assembly. The at least one carrier injection pump assembly is designed to pump a portion of the wastewater fed to the at least one carrier injection pump assembly (in one embodiment, the portion of the wastewater is between about 10 and 50 GPS) as an auxiliary stream of the wastewater flowing through the at least one outflow pipe and valve assembly.

[0015] In one embodiment of the system for treating wastewater, a jet mixer assembly is operatively disposed on a bottom portion of the at least one reactor tank assembly and is designed to mix wastewater in the reactor tank assembly, the wastewater including existing wastewater extracted from the reactor tank assembly and wastewater reintroduced into the reactor tank assembly through the at least one return pipe and valve assembly.

[0016] In one embodiment of the system for treating wastewater, at least one pH sensor assembly is at least partially disposed within the wastewater stream and is operatively connected to at least one computer system, the at least one computer system being configured to control the introduction of at least one or more of an acid and a caustic, wherein the acid is from at least one acid storage reactor tank and valve assembly operatively coupled to the wastewater stream, the caustic is from at least one caustic storage reactor tank and valve assembly operatively coupled to the wastewater stream, the at least one or more acids and caustic being used to treat the wastewater by changing the pH of the wastewater, the at least one or more acids and caustic being introduced into the wastewater as the wastewater flows through one or more streams of the outflow conduit and valve assembly until the wastewater is suitable for discharge through one or more treatments.

[0017] In one embodiment of the system for treating wastewater, at least one static mixer is disposed on the outflow pipe and valve assembly, and at least one pH sensor is disposed on the outflow pipe and valve assembly and is located after the static mixer. The at least one pH sensor is designed to test the pH of the wastewater after the wastewater has passed through the static mixer, wherein if the pH is between a closed interval of 5.0 and 8.0, the selector valve assembly is opened, allowing the wastewater to flow out of the system for treating wastewater and flow to the sewer system. If the pH is less than 5.0 or greater than 8.0, the selector valve assembly is closed and the wastewater is directed back to the original reactor tank.

[0018] The inventive concept will now be described more fully hereinafter with reference to the accompanying drawings, which are intended to be read in conjunction with this summary, detailed description, and any preferred and / or specific embodiments specifically discussed or otherwise disclosed. However, the inventive concept may be embodied in many different forms and should not be construed as limited to the embodiments described herein; rather, these embodiments are provided merely as examples so that this disclosure will be thorough and complete and will fully convey the full scope of the inventive concept to those skilled in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A representative monomeric acid waste neutralizer is shown.

[0020] Figure 2 A representative duplex acidic waste neutralizer is shown.

[0021] Figure 3A and Figure 3B A representative embodiment of a piping and valve assembly for directing wastewater into and out of a reactor tank assembly is shown.

[0022] Figure 4 A conventional acidic waste neutralizer is shown.

[0023] Figure 5A and Figure 5B A representative method for treating wastewater using at least one representative acidic waste neutralizer is shown.

[0024] Figure 6 One representative arrangement of a reactor tank assembly is shown. DETAILED DESCRIPTION

[0025] The following is a more detailed description of various related concepts and embodiments thereof related to the methods and devices of the present disclosure. It should be understood that the various aspects of the subject matter introduced above and discussed in more detail below can be implemented in a variety of ways, as the subject matter is not limited to any particular implementation. Examples of specific implementations and applications are provided primarily for illustrative purposes.

[0026] Figure 1 and Figure 2 In one representative embodiment of a wastewater treatment system, wastewater is shown flowing from various sources in manufacturing facilities 1, 2, 3, 4 ... N through an inlet port assembly to a reactor tank assembly 100. This flow is typically DI water (deionized water), but may include other types of wastewater from manufacturing facilities, DI water being water that has been purified to remove substantially all mineral ions (cations such as sodium, calcium, iron, and copper) and anions (such as chloride and sulfate ions). The characteristics of these flows and the associated pH vary from acidic at pH 0.50 to alkaline at pH over 10.0.

[0027] Figure 1 and Figure 2 As further shown, in this representative embodiment, at least one inflow pipe and valve assembly 160 directs wastewater to at least one reactor tank. At least one outflow pipe and valve assembly 170 directs wastewater out of the at least one reactor tank. At least one return pipe and valve assembly 180 of the at least one outflow pipe and valve assembly 170 directs at least a portion of the wastewater flowing out of the at least one reactor tank assembly 100 back into the at least one reactor tank assembly 100 as desired. The pipes and valve assemblies 160, 170, and 180 are operatively coupled to the at least one reactor tank assembly 100. A section of any pipe and valve assembly 160, 170, and 180 may be referred to as a pipeline.

[0028] Figure 1 and Figure 2 As further shown, the flow rates in various embodiments can range from near 0 GPM to peaks of 5000 to 10000 GPM. In this representative embodiment, a typical module consists of at least one reactor tank assembly 100 and at least one transfer kit, including piping and valve assemblies 160, 170 and 180, which can be designed to handle any flow rate from 1000 to 5000 GPM, depending on the manufacturing facility.

[0029] Figure 1 and Figure 2 It is further shown that in this representative embodiment, the design treats about 2500 GPM. The wastewater flows into the first reactor tank assembly 100 and has a residence time within the first reactor tank assembly 100 of about 2 to 15 minutes, depending on the treatment being performed. The wastewater enters the reactor tank assembly 100 and enters the distribution tank (or distribution header) where the wastewater is evenly distributed over the surface of the wastewater already in the reactor tank assembly 100. The wastewater is mixed with a controlled amount of caustic or acid and recycled water from the corresponding at least one chemical storage reactor tank assembly 21, the mixing being sufficient to ensure substantially complete and substantially uniform end result intermixing to achieve a treatment target of a pH range of generally between about 6.50 to 9.50 pH. The wastewater then leaves the reactor at a flow rate of about 1000 to 3000 GPM at line 5.

[0030] Figure 1 and Figure 2 As further shown, in this representative embodiment, the second stream at line 6 is derived from the flow at line 5 at a flow rate of about 10 to 50 GPM and is fed to the carrier injection pump assembly 19 to premix and inject the correct amount of blended pH adjustment acid and caustic into the inlet of the carrier injection pump assembly 19. An optional bag filter 7 can be placed in the line of the wastewater flow to capture larger particles and debris that might otherwise clog the pump assembly. In different embodiments, the caustic and acid can be added before or after the bag filter 7.

[0031] Figure 1 and Figure 2 As further shown, the wastewater in this representative embodiment flows through line 8 to the inlet of a circulation pump assembly 9 for increasing the pressure in line 10 to drive a jet mixer 110 and for mixing by at least one static mixer 13. The wastewater flows through valve 11 which modulates the flow through line 12 by the at least one static mixer 13 which mechanically mixes the pH fluid from line 20 and the feed stream from line 12 into a blended solution which flows through line 14. In one embodiment, about 10% to 50% of the additional flow may be used for recovery.

[0032] Figure 1 and Figure 2 As further shown, in this representative embodiment, the pH of the wastewater is adjusted and if the pH is within an acceptable range, the wastewater is sent through selector valve 15 for discharge to a sewer or other outlet. In other cases, valve 15 is closed and valve 16 is opened to recycle the wastewater back into the reactor tank assembly 100 for further processing. Valve 17 in this representative embodiment works together with valve 11 to maintain a proper balance of flow back to the ejector 110, which increases mixing by using injection to enhance the mixed flow and pushes the flow out of the system in pipeline 18, where caustic and acid are added to the mixture as needed to be suitable to bring the pH at least closer to within the desired boundaries. At least one water level sensor 125 is provided in each reactor tank assembly 100, and at least one pH sensor 120 is provided, which is designed to monitor the pH of the wastewater flow and provide a programmable logic controller (PLC) 600 (such as Figure 6 The PLC 600 provides data signals such that at least one computer system will monitor and manage the appropriate addition of chemicals to the wastewater stream to meet the treatment objectives of the operating facility. The wastewater treatment system is automated and driven by the PLC 600 to respond to changes in process feeds and meet the desired wastewater treatment objectives. Data can be stored for further analysis and simulations can be performed using the PLC 600 to improve algorithms for controlling the flow, mixing, and timing of wastewater and treatment chemicals.

[0033] Figure 1 and Figure 2 It is further shown that pipeline 6 of this representative embodiment feeds water to a carrier injection pump assembly 19 which increases the pressure and premixes the caustic and acid into pipeline 20 under the control of a computer system, which then feeds the mixture into pipeline 12 to be blended with water from pipeline 10 through mixer 13 for delivery to pipeline 14.

[0034] Figure 1 and Figure 2 As further shown, the system requires either an acid or caustic solution to set the pH within the desired limits. In this representative embodiment, these acid and caustic solutions are delivered under pressure from the respective at least one chemical storage reactor tank assembly 21 to the wastewater stream, the acid and caustic solutions being released through a release valve assembly 130 which is controlled by at least one computer system designed to determine measures to accurately deliver the acid and caustic chemicals to the wastewater treatment process as required.

[0035] Figure 2It is further shown that in this representative embodiment, pipeline 22 can be opened to allow wastewater to flow directly from the illustrated first reactor sequence 100 to the wastewater discharge port. Pipeline 22 is also used when the reactor tank assembly is reversed in the lead-lag arrangement. This use of pipeline 22 further allows the manufacturing facility to operate the two reactor tank assemblies 100 illustrated in this representative embodiment in parallel, or in a lead and lag sequence arrangement. In one embodiment, normal operation is performed with two reactor tank assemblies 100 in series. In the flow path shown in solid lines, the first reactor tank assembly 100 is in the lead position and the second reactor tank assembly 100 is in the lag position. In the flow path shown in dotted lines, the second reactor tank assembly 100 is in the lead position and the first reactor tank assembly 100 is in the lag position. Multiple double sequences can be added in parallel to expand the inlet flow rate.

[0036] Figure 2 Further shown, lines 23 and 24 of this representative embodiment are used to flow wastewater from the manufacturing facility to the representative second reactor tank assembly 100. Lines 23 and 24 provide the flexibility to operate the two modules in parallel or in a lead and lag sequence.

[0037] Figure 2 Further shown, line 25 of the representative embodiment is used to transfer wastewater from the representative second reactor tank assembly 100 back to the representative first reactor tank assembly 100 when reversing the flow of the lead-lag arrangement. Switching between lead-lag flow and parallel flow can be performed manually or automatically.

[0038] Figure 1 and Figure 2 It is further shown that the motor 190 used in this representative embodiment (such as, for example, pumps 9 and 19 used to operate the wastewater treatment system) has a variable speed control. These valves (such as shown in 11, 15, 16, 17, 22, 23 and 24, but not limited thereto) are managed by at least one computer system to balance flow and pressure to achieve the treatment process goals. The wastewater flow includes discharging treated wastewater, receiving various wastewater streams of different pH and flow, accurately mixing acid and caustic chemicals, and sending wastewater for discharge or recovery. The water level sensor 125 and the pH sensor 120 can be disposed in the reactor tank assembly 100, as shown in the representative embodiment, and the pH sensor 120 can be disposed in various streams flowing through the pipeline to monitor the pH of the wastewater flow. The temperature sensor disposed in the reactor tank assembly 100 and one or more of the pipes and valve assemblies 160, 170 and 180 measures the temperature. The pressure sensor disposed in the reactor tank assembly 100 and one or more of the pipes and valve assemblies 160, 170 and 180 measures the pressure.

[0039] If desired, the wastewater treatment system can be operated with a single reactor tank assembly 100 , in which case wastewater from the single reactor tank assembly 100 is routed to a sewer or other storage location without passing through another reactor tank assembly 100 .

[0040] In this representative embodiment, when one reactor tank assembly 100 is in use and if the pH of the treated water exiting the static mixer 13 does not meet the pH specification, a reject reflux to the corresponding reactor tank assembly 100 is used.

[0041] In this representative embodiment, the wastewater is typically derived from ultrapure water (UPW) and is delivered to the reactor tank assembly 100 via separate lines (as shown by lines 1, 2, 3, 4, ... N). Given the prevalence of acid use in electronic or semiconductor manufacturing facilities, the system used to treat wastewater from such facilities may be referred to as an acid waste neutralizer or AWN. Figure 6 As shown, multiple duplex series of reactor tank assemblies 100 may be added in parallel to expand the inlet flow capacity.

[0042] Figure 3A and Figure 3B An outline view of one representation of a return piping and valve assembly 180 is shown, including wastewater flows from various sources in manufacturing facilities 1, 2, 3, 4...N, pumps 9 and 19, pipelines 5 and 8, pipelines 18 and 20, and a chemical storage reactor tank assembly 21.

[0043] Figure 5A and Figure 5BA representative method for treating wastewater is shown, including step 510, sending wastewater from at least one inlet pipe and valve assembly 160 connected to at least one reactor tank assembly 100, through at least one inlet header port assembly disposed on the top portion of at least one reactor tank assembly 100, into the at least one reactor tank assembly 100. The method further includes step 515, mixing the wastewater by water flow pressure generated by at least one circulating pump assembly 9. The method further includes step 520, further mixing the wastewater by at least one ejector 110, mixing at least one or more of the acid and caustic in the wastewater introduced into the at least one reactor tank assembly 100 until substantially uniformly intermixed. The method further includes step 525, sending the wastewater from the at least one reactor tank assembly 100 through at least one inlet pipe and valve assembly 170 connected to at least one outlet port assembly of the at least one reactor tank assembly 100. The method further includes step 530, measuring pH by at least one pH sensor 120 disposed in the wastewater that has flowed into the outflow pipe. The method further includes step 535, if the pH is within an unacceptable range, treating the wastewater by introducing at least one or more of an acid and a caustic into the wastewater stream via at least one auxiliary stream of the wastewater pumped by the carrier injection pump assembly 19 from the wastewater flowing through the at least one inflow conduit and valve assembly 170. The method further includes step 540, if the pH is within an unacceptable range, returning at least a portion of the treated wastewater to the at least one reactor tank assembly 100 through at least one inflow conduit and valve assembly 180 of the at least one inflow conduit and valve assembly 170. The method further includes step 545, if the pH is within an acceptable range, discharging at least a portion of the wastewater from the system for treating wastewater.

[0044] Figure 5A and Figure 5B As shown, the method may further include step 545, testing the pH of the wastewater after the wastewater passes through at least one static mixer 13 arranged on the inlet pipe and valve assembly 170, if the pH is between the closed interval of 5.0 and 8.0, opening the selection valve assembly 15 and allowing the wastewater to flow out of the system for treating wastewater, and if the pH is less than 5.0 or greater than 8.0, closing the selection valve assembly 15 and directing the wastewater to flow back to at least one reactor tank assembly 100.

[0045] Figure 5A and Figure 5BAs shown, the method may further include step 550, maintaining a variable wastewater level in the buffer zone of the at least one reactor assembly. The method may further include step 555, circulating a variable flow of wastewater. The method may further include step 560, including water flowing at a flow rate of about 2500 to 10,000 gallons per minute. The method may further include step 565, using at least one circulation pump, buffer zone and parallel reactor tank assembly 100 to control the wastewater flow. The method may further include step 570, feeding the wastewater into a distribution tank and distributing the wastewater substantially evenly on the surface of the wastewater already in the at least one reactor tank assembly 100. The method may further include step 575, capturing larger particles and debris from the wastewater flow with at least one bag filter 7. The method may further include step 580, switching between the lead-lag wastewater flow and the parallel wastewater flow in at least one or more of a manual mode and an automatic mode.

[0046] Figure 6 Arrangements of reactor tank assemblies 100 are shown, including lead-lag and parallel arrangements, as shown with six representative elements of piping and valve assemblies 160, 170, and 180 operatively coupled to 100. Lead-lag flow and parallel flow can occur together.

[0047] Various related embodiments of the inventive concept are also described in the accompanying drawings filed and marked as Appendix A, the entire contents of which are incorporated herein by reference. The following patents are all incorporated herein by reference: US2018 / 0162743, US9,884,348, US7,972,507, US3,395,799, CN209721777, CN109553148, KR100500374, KR20030076009, JP2003148400, CN1094469, and JP55018274.

[0048] Although the inventive concept has been described above with reference to specific embodiments, it should be understood that the inventive concept is not limited to these disclosed embodiments. After reading the teachings of this disclosure, a person skilled in the art to which the inventive concept belongs will obtain many modifications and other embodiments of the inventive concept, which are intended to be and are covered by the present disclosure and the appended claims. In fact, the scope of the inventive concept should be determined by the correct interpretation and construction of the appended claims and their legal equivalents, as understood by those skilled in the art based on the disclosure in this specification and the accompanying drawings.

Claims

1. A system for treating wastewater, comprising: at least one reactor tank assembly; The at least one reactor tank assembly is operable in at least one or more of the following ways: the at least one reactor tank assembly is operated individually, the at least one reactor tank assembly is operated as a series of reactor tank assemblies, and the at least one reactor tank assembly is operated in parallel with other reactor tank assemblies; at least one inlet conduit and valve assembly coupled to the at least one reactor tank assembly and adapted to direct wastewater into the at least one reactor tank assembly through at least one inlet manifold port assembly disposed on a top portion of the reactor tank assembly; at least one outflow conduit and valve assembly coupled to at least one outlet port assembly of the at least one reactor tank assembly and adapted to direct wastewater away from the at least one reactor tank assembly; at least one return conduit and valve assembly of the at least one outflow conduit and valve assembly, the at least one return conduit and valve assembly being adapted to direct at least a portion of the wastewater flowing out of the at least one reactor tank assembly back into the at least one reactor tank assembly as desired; at least one circulation pump assembly, the at least one circulation pump assembly being disposed on the at least one outflow conduit and valve assembly; at least one carrier injection pump assembly adapted to pump a portion of the wastewater fed to the at least one carrier injection pump assembly as an auxiliary stream of wastewater flowing through the at least one outflow conduit and valve assembly; at least one jet mixer assembly operatively disposed on a bottom portion of the at least one reactor tank assembly and adapted to mix wastewater in the reactor tank assembly, the wastewater including wastewater present that is withdrawn from the reactor tank assembly and wastewater that is reintroduced into the reactor tank assembly via the at least one return conduit and valve assembly; as well as At least one pH sensor assembly disposed at least partially within the wastewater stream and operatively coupled to at least one computer system adapted to control the introduction of at least one or more of an acid and a caustic, wherein the acid is derived from at least one acid storage reactor tank and valve assembly operatively coupled to the wastewater stream, the caustic is derived from at least one caustic storage reactor tank and valve assembly operatively coupled to the wastewater stream, the at least one or more acids and caustic being used to alter the pH of the wastewater, the at least one or more acids and caustic being introduced into the wastewater as it flows through one or more streams of the outflow conduit and valve assembly.

2. The system for treating wastewater according to claim 1, wherein: At least one static mixer is disposed on the outflow pipe and valve assembly, and at least one pH sensor is disposed on the outflow pipe and valve assembly after the static mixer, the pH sensor being suitable for testing the pH of the wastewater after the wastewater has passed through the static mixer, and if the pH is between a closed interval of 5.0 and 8.0, the selector valve is adjusted to open and allow the wastewater to flow out of the system for treating wastewater, and if the pH is less than 5.0 or greater than 8.0, the selector valve is adjusted to close and direct the wastewater to flow back into the reactor tank assembly.

3. The system for treating wastewater according to claim 1, wherein: The at least one reactor tank assembly has a buffer zone adapted to maintain variable wastewater levels.

4. The system for treating wastewater according to claim 1, wherein: Flow rates vary between 2,500 and 10,000 gpm, closed range.

5. The system for treating wastewater according to claim 4, wherein: The circulation pump assembly is suitable for handling wastewater flows of different flow rates.

6. The system for treating wastewater according to claim 4, wherein: The flow rate variation range can be controlled by the at least one circulation pump, the buffer zone, and the parallel reactor tank assembly.

7. The system for treating wastewater according to claim 1, wherein: The distribution trough of the at least one reactor tank assembly is adapted to receive wastewater and distribute the wastewater substantially evenly over a surface of wastewater already in the at least one reactor tank assembly.

8. The system for treating wastewater according to claim 1, wherein: At least one bag filter disposed on the outflow stream is adapted to capture particulates and debris in the wastewater stream.

9. The system for treating wastewater according to claim 1, wherein: The at least one reactor assembly includes at least one propeller assembly adapted to mix the wastewater.

10. A method for treating wastewater, comprising: delivering wastewater from at least one inlet conduit and valve assembly coupled to at least one reactor tank assembly into the at least one reactor tank assembly through at least one inlet header port assembly disposed on a top portion of the at least one reactor tank assembly; mixing the wastewater by water flow pressure generated by at least one circulating pump assembly; The wastewater is further mixed by at least one ejector, mixing at least one or more of an acid and a caustic in the wastewater introduced into the at least one reactor tank assembly into a substantially homogeneous intermixture; routing wastewater from the at least one reactor tank assembly through at least one outflow conduit and valve assembly, wherein the at least one outflow conduit and valve assembly is coupled to at least one outlet port assembly of the at least one reactor tank assembly; measuring pH by at least one pH sensor disposed in the wastewater that has flowed into the outflow pipe; if the pH is within an unacceptable range, treating the wastewater by introducing at least one or more of an acid and a caustic into the wastewater stream via at least one auxiliary stream of the wastewater, the auxiliary stream of wastewater being pumped by a carrier injection pump assembly from the wastewater flowing through the at least one outflow conduit and valve assembly; If the pH is within an unacceptable range, returning at least a portion of the treated wastewater to at least one reactor tank assembly via at least one return conduit and valve assembly in the at least one outflow conduit and valve assembly; and If the pH is within an acceptable range, at least a portion of the wastewater is discharged from the system for treating the wastewater.

11. The method for treating wastewater according to claim 10, comprising testing the pH of the wastewater after the wastewater has passed through at least one static mixer arranged on the outflow pipe and valve assembly, opening the selection valve assembly and allowing the wastewater to flow out of the system for treating wastewater if the pH is between a closed interval of 5.0 and 8.0, and closing the selection valve assembly and directing the wastewater to flow back to at least one reactor tank assembly if the pH is less than 5.0 or greater than 8.

0.

12. The method for treating wastewater of claim 10, comprising maintaining a variable wastewater level within a buffer zone of the at least one reactor assembly.

13. A method for treating wastewater according to claim 12, comprising circulating a variable flow of wastewater.

14. The method for treating wastewater of claim 13, comprising flowing between about 2,500 and 10,000 gallons of water per minute.

15. The method for treating wastewater according to claim 10, comprising controlling the flow of wastewater with at least one circulation pump, buffer zone and parallel reactor tank assembly.

16. The method for treating wastewater according to claim 10, comprising feeding wastewater into a distribution tank and distributing the wastewater substantially evenly over a surface of wastewater already in the at least one reactor tank assembly.

17. The method for treating wastewater of claim 10, comprising capturing larger particles and debris from the wastewater stream with at least one bag filter.

18. The method for treating wastewater according to claim 10, comprising switching between the lead-lag wastewater flow and the parallel wastewater flow in at least one or more of a manual manner and an automatic manner.

19. A system for treating wastewater, comprising: at least one reactor tank assembly; a distribution trough of the at least one reactor tank assembly, the distribution trough being adapted to receive wastewater and distribute the wastewater substantially evenly over a surface of the wastewater already in the at least one reactor tank assembly; The at least one reactor tank assembly is adapted to operate with at least one second reactor tank assembly in lead-lag flow and parallel flow, and switching between lead-lag flow and parallel flow is adapted to be performed by at least one or more of a manual mode and an automatic mode; at least one inlet conduit and valve assembly coupled to the at least one reactor tank assembly and adapted to direct wastewater into the at least one reactor tank assembly through at least one inlet header port assembly disposed on a top portion of the at least one reactor tank assembly; at least one outflow conduit and valve assembly coupled to at least one outlet port assembly of the at least one reactor tank assembly, the at least one outlet port assembly adapted to direct wastewater away from the at least one reactor tank assembly; at least one return conduit and valve assembly of the at least one outflow conduit and valve assembly, the at least one return conduit and valve assembly being adapted to direct at least a portion of the wastewater flowing out of the at least one reactor tank assembly back into the at least one reactor tank assembly as desired; at least one circulation pump assembly, the at least one circulation pump assembly being disposed on the at least one outflow conduit and valve assembly; at least one carrier injection pump assembly adapted to pump a portion of the wastewater fed to the at least one carrier injection pump assembly as an auxiliary stream of wastewater flowing through the at least one outflow conduit and valve assembly; at least one jet mixer assembly operatively disposed on a bottom portion of the at least one reactor tank assembly, the at least one jet mixer assembly being adapted to mix wastewater in the at least one reactor tank assembly, the wastewater including wastewater presently withdrawn from the at least one reactor tank assembly and wastewater reintroduced into the at least one reactor tank assembly via the at least one return conduit and valve assembly; at least one pH sensor assembly disposed at least partially within the wastewater stream and operatively coupled to at least one computer system adapted to control the introduction of at least one or more of an acid and a caustic, wherein the acid is from at least one acid storage reactor tank and valve assembly operatively coupled to the wastewater stream, the caustic is from at least one caustic storage reactor tank and valve assembly operatively coupled to the wastewater stream, the at least one or more acids and caustic being used to alter the pH of the wastewater, the at least one or more acids and caustic being introduced into the wastewater as it flows through one or more streams of the outflow conduit and valve assembly; as well as One or more sensors from the following group: a temperature sensor disposed in at least one or more of the reactor tank assembly and the pipe and valve assembly; a pressure sensor disposed in at least one or more of the reactor tank assembly; and a flow sensor disposed in at least one or more of the pipe and valve assembly.

20. The system for treating wastewater according to claim 19, wherein: At least one static mixer is disposed on the outflow pipe and valve assembly, and at least one pH sensor is disposed on the outflow pipe and valve assembly after the static mixer, the pH sensor being suitable for testing the pH of the wastewater after the wastewater has passed through the static mixer, and if the pH is between a closed interval of 5.0 and 8.0, the selector valve is adjusted to open and allow the wastewater to flow out of the system for treating wastewater, and if the pH is less than 5.0 or greater than 8.0, the selector valve is adjusted to close and direct the wastewater to flow back into the reactor tank assembly.

21. The system for treating wastewater according to claim 19, wherein: The at least one reactor tank assembly has a buffer zone adapted to maintain variable wastewater levels.

22. The system for treating wastewater according to claim 19, wherein: Flow rates vary between 2,500 and 10,000 gpm, closed range.

23. The system for treating wastewater according to claim 22, wherein: The circulation pump assembly is suitable for handling wastewater flows of different flow rates.

24. The system for treating wastewater according to claim 22, wherein: The flow rate variation range can be controlled by the at least one circulation pump, the buffer zone, and the parallel reactor tank assembly.

25. The system for treating wastewater according to claim 19, wherein: At least one bag filter disposed on the outflow stream is adapted to capture particulates and debris in the wastewater stream.

26. The system for treating wastewater according to claim 19, wherein: The at least one reactor assembly includes at least one propeller assembly adapted to mix the wastewater.

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