SYSTEM FOR THE TREATMENT OF WASTEWATER FROM ELECTRONICS AND SEMICONDUCER FACTORIES

Abstract

A system for treating wastewater from electronics and semiconductor factories, comprising at least one reactor tank assembly and at least one wastewater transport system consisting of inlet, outlet, and return pipe, valve, and pump assemblies. The reactor tank assembly is interchangeable and can be operated individually, as a series of reactor tank assemblies, or in parallel with other reactor tank assemblies. At least one continuous mixer assembly is mounted in a ready-to-operate position at the bottom of the reactor tank and serves to mix the wastewater within the reactor tank assembly. At least one computer-monitored pH sensor assembly is located at least partially within the wastewater stream. At least one or more acids and alkalis from the respective storage tanks are used to modify the pH of the wastewater until it is treated and suitable for discharge.

Description

AREA OF INVENTION

[0001] The present invention concept relates to a system for the treatment of wastewater, in particular wastewater from electronics and semiconductor manufacturing plants, but also from other types of factories. BACKGROUND

[0002] Electronics, semiconductor, and many other companies use acid waste neutralization (AWN) systems to treat the millions of liters of wastewater that can flow from their production facilities every day. Much of the non-particulate wastewater is deionized. The pH of this wastewater can vary widely from high to low. Regulations stipulate that the pH for discharge must be approximately 7.0.

[0003] A conventional wastewater treatment system for neutralizing acidic waste consists of two to three reactor tank arrays connected in series, with a wastewater residence time of 30 to 90 minutes during treatment. These reactor tank arrays can hold more than 100,000 gallons of wastewater and handle a typical flow rate of 1,000 to 10,000 gallons per minute (GPM). Furthermore, these reactor tank arrays feature top-mounted agitators and acid and alkali supply systems to neutralize the water to an acceptable pH of 7.0.

[0004] Space conservation is important in manufacturing facilities where production is environmentally controlled, and creating new space can be difficult. Conventional systems have several disadvantages. 1) The size of a reactor-tank wastewater treatment system capable of handling 2,500 GPM is approximately 30 feet wide, 100 feet long, and 30 to 50 feet high. This footprint accommodates more than one reactor, with each reactor having a radius of about 15 feet. 2) The treatment plants are built on-site because many of the pre-assembled components are too large to be transported on most roads. On-site production increases costs, and production time is longer than with efficient shop floor manufacturing. 3) The reactor-tank assemblies typically operate at 100% capacity.There is no flow balancing, meaning the system is limited to and must be able to handle the peak flow rate supplied by the production plant. 4) The entire wastewater treatment system is designed for gravity discharge, meaning all pipes must be designed to allow gravity to feed into and out of the system. 5) Because the wastewater treatment system is already designed to handle the peak flow rate expected from the production plant during installation, expanding a production plant can prove difficult. This is because the capacity of the existing wastewater treatment system needs to be increased, taking into account potentially limited wastewater capacity and the limited available installation space for expanding the wastewater treatment system.

[0005] Therefore, there is a market need for an improved wastewater treatment system for electronics and semiconductor manufacturing plants that offers the possibility of expanding water treatment capacity and reducing both the space requirements of the plants and the water pressure required to transport the wastewater through the system. SUMMARY OF THE INVENTION

[0006] Disclosed are a wastewater treatment system and process for electronics and semiconductor manufacturing facilities which, in one embodiment, reduces the footprint of a conventional wastewater treatment system from 25 ft x 100 ft to approximately 25 ft x 25 ft by ...

[0007] In one embodiment of the presented wastewater treatment system, the reactors are designed to include a buffer zone suitable for accommodating varying volumes of wastewater. This means that factories can use smaller reactors, level controls, and variable-speed circulation pumps to manage the wastewater treatment process and accommodate different wastewater flows.

[0008] In one embodiment of the disclosed wastewater treatment system, at least one recirculation pump assembly is used to mix and recycle the wastewater while the system adjusts pH values ​​higher or lower than the permissible pH values ​​for discharge. Mixing is further enhanced by mixing nozzles located at the bottom of each reactor tank. These nozzles also serve to increase pressure and water flow. In one embodiment, two to ten mixing nozzles increase the mixing of the wastewater beyond the circulation generated by the recirculation pumps alone. Therefore, water flows are generated without the need for mechanical propeller mixers.

[0009] The exposed wastewater treatment system is so compact that prefabricated systems can be transported by truck along a typical roadway. As such, the exposed wastewater treatment system can be manufactured in the form of prefabricated and pre-packaged modules and erected in parallel with the preparation of the installation site at the receiving electronics and semiconductor manufacturing facility.

[0010] Implementations of the wastewater treatment system presented here do not rely on gravity; instead, the wastewater is pumped through the pipes of a pipe system. The flow rate can be increased through the existing pipes by increasing the water pressure.

[0011] The presented wastewater treatment system offers modularity and associated expansion possibilities. Furthermore, the installation of parallel reactor systems can facilitate system expansion as needed, compared to conventional gravity-based systems of similar capacity.

[0012] Embodiments of the disclosed wastewater treatment system are designed to be operationally flexible by incorporating capacity buffers designed to handle and manage variable wastewater flows. Multiple reactor tank arrays of the disclosed wastewater treatment system can be connected in series for fine-tuning of wastewater output, or multiple reactor tank arrays can be connected in parallel, so that the flow rate can essentially double for each parallel reactor tank array compared to a single reactor tank array. Multiple arrays of reactor tank arrays correspondingly increase the available wastewater capacities. In one embodiment of the wastewater system, the wastewater treatment flows can be configured to flow either sequentially or in parallel through multiple arrays of reactor tank arrays, with flow rate variability ranging from approximately 2,500 GPM to 10.000 GPM is sufficient.

[0013] One embodiment of the wastewater treatment system comprises at least one reactor tank assembly. The at least one reactor tank assembly can be operated individually, as a series of reactor tank assemblies, or in parallel with other reactor tank assemblies. At least one inlet line and valve assembly is connected to the at least one reactor tank assembly and is designed to direct wastewater into the at least one reactor tank assembly through at least one inlet collector connection assembly located on an upper part of the reactor tank assembly. At least one outlet line and valve assembly is connected to at least one outlet opening of the at least one reactor tank assembly and serves to discharge wastewater from the at least one reactor tank assembly.At least one return line and valve assembly of the at least one drain line and valve assembly is designed to direct at least a portion of the wastewater flowing from the at least one reactor tank assembly back into the at least one reactor tank assembly when required.

[0014] In this embodiment of the wastewater treatment system, the at least one circulation pump assembly is arranged on the at least one discharge pipe and valve assembly. In this embodiment, there is at least one carrier-injector pump unit. The at least one carrier-injector pump unit is designed to pump a portion – in one embodiment between approximately 10 and 50 g / km – of the wastewater that is supplied to it as a secondary wastewater stream flowing through the at least one discharge pipe and valve assembly.

[0015] In one embodiment of the wastewater treatment system, the centrifugal mixer assembly is operationally arranged on a lower part of the at least one reactor tank assembly and is designed to mix the wastewater in the reactor tank assembly, including, if any, the wastewater that is drawn off from the reactor tank assembly and reintroduced into the reactor tank assembly through the at least one return line and valve assembly.

[0016] In one embodiment of the wastewater treatment system, at least one pH sensor array is at least partially located in the wastewater stream and operationally coupled to at least one computer system. The at least one computer system is designed to control the introduction of at least one acid from at least one acid storage reactor tank and a valve assembly operationally coupled to the wastewater stream, and an alkali from at least one alkali storage reactor tank and a valve assembly operationally coupled to the wastewater stream, wherein the at least one or more acids and alkalis are used to treat the wastewater by changing its pH value.The at least one or more acids and alkalis are introduced into the wastewater as it flows through one or more streams of the drain line and valve arrangement until the wastewater is suitable for discharge after one or more treatments.

[0017] In one embodiment of the wastewater treatment system, at least one static mixer is arranged at the discharge line and valve assembly. At least one pH sensor is arranged at the discharge line and valve assembly downstream of the static mixer. The at least one pH sensor is designed to check the pH value of the wastewater after it has passed through the static mixer. If the pH value is between 5.0 and 8.0, a selector valve assembly opens, allowing the wastewater to flow from the wastewater treatment system into a sewer system. If the pH value is less than 5.0 or greater than 8.0, the selector valve assembly closes, and the wastewater returns to the original reactor tank.

[0018] The concept according to the invention is described in more detail below with reference to the accompanying drawings, which should be read in conjunction with this summary, the detailed description, and all preferred and / or special embodiments that are specifically discussed or otherwise disclosed. However, the concept according to the invention can be embodied in many different forms and should not be understood as being limited to the embodiments presented here; rather, these embodiments are provided only for illustration purposes, so that this disclosure is thorough and complete and conveys to the person skilled in the art the full scope of the concept according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 shows a representative single plant for the neutralization of acidic waste. Fig. Figure 2 shows a representative double acid neutralizer. The Fig. 3A and Fig. Figure 3B shows a representative embodiment of the pipe and valve assembly that directs the wastewater to and from the reactor tank arrangements. Fig. Figure 4 shows a conventional neutralizer for acidic waste. The Fig. 5A and Fig. Figure 5B shows a representative method for treating wastewater with at least one representative neutralizing agent for acidic waste. Fig. Figure 6 illustrates a representative arrangement of reactor tank arrangements. DETAILED DESCRIPTION OF THE INVENTION

[0019] More detailed descriptions of various related concepts and embodiments of methods and devices according to the present disclosure follow. It should be noted that various aspects of the subject matter presented above and explained in more detail below can be implemented in numerous ways, as the subject matter is not limited to a specific type of implementation. Examples of specific implementations and applications are given primarily for illustrative purposes.

[0020] The Fig. 1 and Fig. Figure 2 illustrates that in a representative embodiment of the wastewater treatment system, wastewater from various sources in the production plant 1, 2, 3, 4...N flows through an inlet opening into a reactor tank arrangement 100. This is typically deionized water (DI water), but it can also contain other types of wastewater from manufacturing plants. DI water is purified water that has essentially removed all mineral ions, e.g., cations such as sodium, calcium, iron, and copper, as well as anions such as chloride and sulfate. The composition of these streams and their associated pH values ​​vary from acidic at pH 0.50 to alkaline at pH above 10.0.

[0021] The Fig. 1 and Fig. Figure 2 further illustrates that, in the representative embodiment, at least one inlet line and valve assembly 160 directs the wastewater to the at least one reactor tank. At least one outlet line and valve assembly 170 directs the wastewater out of the at least one reactor tank. At least one return line and valve assembly 180 of the at least one outlet line and valve assembly 170, if necessary, directs at least a portion of the wastewater flowing from the at least one reactor tank assembly 100 back into the at least one reactor tank assembly 100. The line and valve assemblies 160, 170, and 180 are operationally connected to the at least one reactor tank assembly 100. A section of any line and valve assembly 160, 170, or 180 can be referred to as a line.

[0022] The Fig. 1 and Fig. Figure 2 further illustrates that the flow rates in various embodiments can range from nearly 0 GPM to a peak value of 5,000 to 10,000 GPM. A typical module in the representative embodiment consists of at least one reactor tank assembly 100 and at least one pumping unit including the piping and valve assemblies 160, 170 and 180, which, depending on the manufacturing plant, can be designed for a flow rate of 1,000 to 5,000 GPM.

[0023] From the Fig. 1 and Fig. Figure 2 further states that the design, in its representative embodiment, can handle approximately 2,500 GPM. The wastewater flows into the first reactor tank assembly 100 and has a residence time of approximately 2 to 15 minutes, depending on the treatment being performed. The wastewater enters the reactor tank assembly 100 and passes into a distribution trough or manifold, from where it is evenly distributed over the surface of the wastewater already present in the reactor tank assembly 100. The wastewater is mixed with controlled quantities of an alkali or acid from at least one chemical storage reactor assembly 21 and recycled water, with the mixing being carried out with sufficient intensity to ensure substantially complete and substantially uniform mixing to achieve the treatment objectives, which are typically in a pH range between approximately 6.50 and 9.50.The wastewater then leaves the reactor via line 5 at approximately 1,000 to 3,000 GPM.

[0024] From the Fig. 1 and Fig. Figure 2 further shows that, in the illustrated embodiment, a second stream in line 6 originates from a stream in line 5 with a flow rate of approximately 10 to 50 GPM and is fed to a carrier injection pump assembly 19 to premix the correct amount of pH-adjusting acid and base and inject it into the inlet of the carrier injection pump assembly 19. An optional bag strainer 7 can be installed in the wastewater stream to capture larger particles and contaminants that could otherwise clog the pump assemblies. In various embodiments, the base and acid can be added upstream or downstream of the bag strainer 7.

[0025] The Fig. 1 and Fig. Figure 2 further illustrates that, in the representative embodiment, the wastewater flows through line 8 to the inlet of a circulation pump assembly 9 to increase the pressure in line 10, thereby driving the flow mixers 110 and mixing them through at least one static mixer 13. The wastewater flows through the valve 11, which modulates the flow through line 12 via the at least one static mixer 13. This mixer mechanically blends the pH liquid from line 20 and the supply flow from line 12 into a mixed solution that flows through line 14. In one embodiment, approximately 10% to 50% of the additional flow can be used for recycling.

[0026] From the Fig. 1 and Fig. Figure 2 further shows that, in the representative embodiment, the pH of the wastewater is adjusted and, if it is within acceptable limits, is directed through the multi-way valve 15 for discharge into a sewer or other outlet. Otherwise, the valve 15 is closed and the valve 16 is opened to direct the wastewater back to the reactor tank assembly 100 for further treatment. The valve 17 and the valve 11 of the representative embodiment work together to maintain the correct balance of the backflow to the continuous mixers 110, which enhance mixing by utilizing reduction to increase the mixing flow and the forward flow out of the system in line 18, with the alkali and acid being added as needed in a mixture suitable for bringing the pH at least close to the required limits.Each reactor tank assembly 100 contains at least one water level sensor 125 and at least one pH sensor 120, which serves to monitor the pH value of the wastewater stream and to supply data signals to a programmable logic controller (PLC) 600, as shown in . Fig. Figure 6 illustrates how at least one computer system monitors and controls the proper addition of chemicals to the wastewater streams to achieve the plant's treatment objectives. The wastewater treatment system is automated and controlled by the PLC 600 to manage fluctuations in process feed and achieve the desired wastewater treatment goals. The data can be stored for further analysis, and the PLC 600 can be used for simulations to improve the algorithms for controlling wastewater and treatment chemical flows, mixing, and scheduling.

[0027] From the Fig. 1 and Fig. 2 further shows that the line 6 of the representative embodiment feeds water into the carrier injection pump assembly 19, which increases the pressure and directs the alkali and acid, premixed according to the control by the computer system, into the line 20, which then feeds the mixture into the line 12 in order to mix it with the water from the line 10 via the mixer 13 and direct it into the line 14.

[0028] The Fig. 1 and Fig. Figure 2 further illustrates that the system requires the acid or alkali to adjust the pH value within the desired limits. In the representative embodiment, these acidic and basic solutions are released under pressure from the respective at least one chemical reactor storage arrangements 21 into the wastewater stream, the acidic and basic solutions being released by a release valve assembly 130, the release valve assembly 130 being controlled by the at least one computer system, which serves to determine the measures for the precise release of the acidic and basic chemicals into the wastewater treatment process as needed.

[0029] Fig. Figure 2 further illustrates that, in the depicted embodiment, line 22 can be opened to allow wastewater to flow directly from the depicted first reactor tank assembly 100 to the wastewater discharge. Line 22 is also used when the reactor tank assemblies are interchanged in the lead-delay arrangement. This use of line 22 also enables the manufacturing plants to operate the two depicted reactor tank assemblies 100 of the representative embodiment in parallel or in a lead-and-delay arrangement. In one embodiment, normal operation is carried out with both reactor tank assemblies 100 in series. The solid lines show the flow paths with a first reactor tank assembly 100 in the leading position and a second reactor tank assembly 100 in the trailing position.The dashed lines show the flow path with the second reactor tank assembly 100 in the leading position and the first reactor tank assembly 100 in the trailing position. To increase the inlet flows, several duplex trains can be connected in parallel.

[0030] In Fig. Figure 2 further shows that lines 23 and 24 of the representative embodiment are used to convey the wastewater from the manufacturing plant to the representative second reactor tank arrangement 100. Lines 23 and 24 offer the flexibility to operate both modules in parallel or sequentially with a pre- and post-flow.

[0031] In Fig. Figure 2 further shows that the line 25 of the representative embodiment serves to direct wastewater from the representative second reactor tank arrangement 100 back into the representative first reactor tank arrangement 100 when the flow of the pre-delay arrangement is reversed. The switching between pre-delay and parallel flow can be performed manually or automatically.

[0032] The Fig. 1 and Fig. Figure 2 further illustrates that the motors 190 used in the representative embodiment, e.g., for operating the pumps 9 and 19 of the wastewater treatment system, have variable speed control. Valves, such as 11, 15, 16, 17, 22, 23, and 24, are controlled by the at least one computer system to balance the flow rates and pressures and to achieve the objectives of the treatment process. The wastewater streams include the discharge of treated wastewater, the intake of various wastewater streams with different pH values ​​and flow rates, the precise mixing of acidic and caustic chemicals, and the onward transfer of wastewater for discharge or reuse.Water level sensors 125 and pH sensors 120 can be arranged in the reactor tank assemblies 100, as shown in the representative embodiment, as well as pH sensors 120 arranged in various streams flowing through the pipes to monitor the pH value of the wastewater streams. Temperature sensors arranged in at least one or more of the reactor tank assemblies 100 and pipe and valve assemblies 160, 170, and 180 measure the temperature. Pressure sensors arranged in at least one or more of the reactor tank assemblies 100 and the inlet pipe and valve assemblies 160, 170, and 180 measure the pressure.

[0033] If necessary, the wastewater treatment system can be operated with a single reactor tank arrangement 100, with the wastewater from the single reactor tank arrangement 100 being directed into the sewer or another storage site without passing through any further reactor tank arrangement 100.

[0034] In the representative embodiment, the non-standard return flow to the respective reactor tank arrangements 100 is used when a reactor tank arrangement 100 is in operation and when the pH value of the treated water leaving the static mixer 13 does not meet the pH specifications.

[0035] In the representative embodiment, the wastewater, which is often ultra-pure water (UPW), is fed to the reactor tank assemblies 100 in separate lines, represented by lines 1, 2, 3, 4...N. The system for treating wastewater from electronics or semiconductor manufacturing can be called an acid waste neutralizer (AWN) because acids are frequently used in such plants. Several double rows of reactor tank assemblies 100 can be connected in parallel to increase the inlet capacity, as shown in Fig. 6 is shown.

[0036] The Fig. 3A and Fig. Figure 3B shows profile views of a representation of the return line and valve assembly 180, which contains wastewater flows from various sources in the manufacturing plant 1, 2, 3, 4...N, pumps 9 and 19, lines 5 and 8, lines 18 and 20 and chemical storage reactor tank assemblies 21.

[0037] The Fig. 5A and Fig. Figure 5B shows a representative wastewater treatment process comprising step 510, in which wastewater is drawn from the at least one inlet line and valve assembly 160, which is connected to at least one reactor tank assembly 100, into the at least one reactor tank assembly 100 through at least one inlet collector connection assembly located at the top of the at least one reactor tank assembly 100. The process further comprises step 515, in which the wastewater is mixed by the water flow pressure generated by at least one circulation pump assembly 9. The process further comprises step 520, in which the wastewater is further mixed by means of the at least one ejector 110 to achieve substantially uniform mixing of the at least one or more acids and bases supplied to the wastewater in the at least one reactor tank assembly 100.The method further comprises step 525, in which wastewater from the at least one reactor tank assembly 100 is passed through at least one inlet line and valve assembly 170, which is coupled by at least one outlet opening assembly of the at least one reactor tank assembly 100. The method further comprises step 530, in which the pH value is measured by at least one pH sensor 120, which is arranged in the wastewater that has flowed into the outlet line. The method further comprises step 535, if the pH value is in an unacceptable range, in which the wastewater is treated by introducing at least one or more of the acids and alkalis into the wastewater stream by means of at least one secondary wastewater stream, wherein the carrier injection pump assembly 19 pumps the secondary wastewater stream from the wastewater flowing through the at least one inlet line and valve assembly 170.The method further comprises step 540, in which, if the pH value is in an unacceptable range, at least a portion of the treated wastewater is returned to at least one reactor tank arrangement 100 via at least one inlet line and valve arrangement 180 or at least one inlet line and valve arrangement 170. The method further comprises step 545, in which, if the pH value is in an acceptable range, at least a portion of the wastewater is discharged from the wastewater treatment system.

[0038] The Fig. 5A and Fig. Figure 5B illustrates that the method may further include step 545, in which the pH of the wastewater is checked after the wastewater has passed through at least one static mixer 13 located on the inlet line and valve assembly 170. If the pH is between 5.0 and 8.0, the selector valve assembly 15 is opened and the wastewater is discharged from the wastewater treatment system; if the pH is less than 5.0 or more than 8.0, the selector valve assembly 15 is closed and the wastewater is returned to at least one reactor tank assembly 100.

[0039] The Fig. 5A and Fig. Figure 5B shows that the method may further include step 550, in which variable quantities of wastewater are held in the buffer zone of the at least one reactor unit. The method may further include step 555, in which variable wastewater streams are circulated. The method may further include step 560, in which water flows at a rate between about 2,500 and 10,000 gallons per minute. The method may further include step 565, in which the wastewater stream is controlled by at least one circulation pump, a buffer zone, and a parallel reactor tank arrangement 100. The method may further include step 570, in which wastewater is directed into the distribution channel and distributed substantially uniformly over the surface of the wastewater already contained in the at least one reactor tank arrangement 100.The method may further include step 575, in which larger particles and contaminants are collected from the wastewater stream using at least one bag sieve 7. The method may further include step 580, in which switching between leading and parallel wastewater streams is performed, at least manually or automatically.

[0040] Fig. Figure 6 illustrates how the reactor tank assemblies 100 can operate with line delay and parallel arrangement, with six representative elements of the line and valve assemblies 160, 170, and 180 connected to the reactor tank assembly 100. Line delay and parallel flows can occur together.

[0041] Various related embodiments of the concept according to the invention are also described in the drawings, which are filed and identified as Appendix A and which are incorporated herein by reference in their entirety. The following patents are incorporated by reference in their entirety: Pat. Nos. US2018 / 0162743, US9,884,348, US7,972,507, US3,395,799, CN209721777, CN109553148, KR100500374, KR20030076009, JP2003148400, CN1094469, and JP55018274.

[0042] Although the concept according to the invention has been described above in the form of specific embodiments, it is to be understood that the concept according to the invention is not limited to these disclosed embodiments. Upon reading the teachings of this disclosure, the person skilled in the art will think of many modifications and other embodiments of the concept according to the invention, to which this concept according to the invention belongs and which are intended to be, and are, covered by both this disclosure and the appended claims. Indeed, it is intended that the scope of the concept according to the invention should be determined by the correct interpretation and construction of the appended claims and their statutory equivalents, as understood by those skilled in the art based on the disclosure in this description and the accompanying drawings. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 2018 / 0162743

[0041] US 9,884,348

[0041] US 7,972,507

[0041] US 3,395,799

[0041] CN 209721777

[0041] CN 109553148

[0041] KR 100500374

[0041] KR 20030076009

[0041] JP 2003148400

[0041] CN 1094469

[0041] JP 55018274

[0041]

Claims

[1] A wastewater treatment system comprising: at least one reactor tank assembly; the at least one reactor tank arrangement can be operated individually, as a series of reactor tank arrangements or in parallel with other reactor tank arrangements; at least one inlet line and valve assembly coupled to the at least one reactor tank assembly and configured to direct wastewater into the at least one reactor tank assembly through at least one inlet header port assembly disposed at an upper portion of the reactor tank assembly; at least one drain line and valve assembly coupled through at least one outlet port assembly of the at least one reactor tank assembly for draining wastewater from the at least one reactor tank assembly; at least one return line and valve arrangement of the at least one drain line and valve arrangement, which is suitable for redirecting at least a portion of the wastewater flowing out of the at least one reactor tank arrangement back into the at least one reactor tank arrangement, if required; at least one circulation pump assembly disposed on the at least one drain line and valve assembly; at least one carrier injection pump assembly, the at least one carrier injection pump assembly being configured to pump a portion of the wastewater supplied thereto as a secondary wastewater stream flowing through the at least one drain line and valve assembly; at least one continuous mixer operatively disposed at a bottom portion of the at least one reactor tank assembly and adapted to mix the wastewater in the reactor tank assembly, including, if present, the wastewater withdrawn from the reactor tank assembly and reintroduced into the reactor tank assembly through the at least one return line and valve assembly; and at least one pH sensor arrangement disposed at least partially within the wastewater stream and operatively coupled to at least one computer system, the at least one computer system being adapted to control the introduction of at least one or more acids from at least one acid storage reactor tank and a valve arrangement operatively coupled to the wastewater stream, and a caustic from at least one caustic storage reactor tank and a valve arrangement operatively coupled to the wastewater stream, the at least one or more acids and caustics being used to alter the pH of the wastewater, the at least one or more acids and caustics being introduced into the wastewater as the wastewater flows through one or more streams of the discharge conduit and valve arrangement. [2] A wastewater treatment system according to claim 1, wherein at least one static mixer is arranged on the discharge line and valve assembly and at least one pH sensor is arranged on the discharge line and valve assembly after the static mixer, wherein the pH sensor is adapted to test the pH of the wastewater after the wastewater has passed through the static mixer and, when the pH is between 5.0 and 8.0 inclusive, a selector valve opens and the wastewater flows out of the wastewater treatment system, and, when the pH is less than 5.0 or greater than 8.0, the selector valve assembly closes and the wastewater flows back into a reactor tank assembly. [3] A wastewater treatment system according to claim 1, wherein the at least one reactor tank assembly includes a buffer zone adapted to accommodate variable amounts of wastewater. [4] The wastewater treatment system of claim 1, wherein the flow rate variability is between 2,500 and 10,000 gallons per minute. [5] A wastewater treatment system according to claim 4, wherein the recirculation pump assemblies are designed to handle different wastewater flow rates. [6] A wastewater treatment system according to claim 4, wherein the flow rate variability ranges are controllable by the at least one recirculation pump, the buffer zone and the parallel reactor tank arrangement. [7] A wastewater treatment system according to claim 1, wherein a distribution trough of the at least one reactor tank assembly is adapted to receive wastewater and distribute that wastewater substantially uniformly over the surface of the wastewater already in the at least one reactor tank assembly. [8] A wastewater treatment system according to claim 1, wherein at least one bag screen disposed in the effluent stream is adapted to capture particles and contaminants from the wastewater stream. [9] A wastewater treatment system according to claim 1, wherein the at least one reactor tank assembly comprises at least one propeller unit suitable for mixing the wastewater. [10] A process for treating waste water, comprising: introducing wastewater from at least one inlet line and valve assembly connected to at least one reactor tank assembly into the at least one reactor tank assembly through at least one inlet header port assembly located at an upper portion of the at least one reactor tank assembly; Mixing of the wastewater by the pressure of the water flow generated by at least one circulation pump; further mixing of the wastewater using at least one continuous mixer, Mixing to a substantially uniform mixture at least one or more acids and alkalis added to the wastewater in the at least one reactor tank arrangement; Sending wastewater from the at least one reactor tank assembly through at least one drain line and valve assembly coupled through at least one outlet port assembly of the at least one reactor tank assembly; Measuring the pH value by at least one pH sensor arranged in the wastewater that has flowed into the drain line; if the pH is in an unacceptable range, treating the wastewater by introducing at least one or more acids and alkalis into the wastewater stream via at least one secondary stream of wastewater, wherein a carrier injector pump arrangement pumps the secondary stream of wastewater from the wastewater flowing through the at least one discharge line and valve arrangement; 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 line and valve assembly of the at least one discharge line and valve assembly; and if the pH is within an acceptable range, discharge at least part of the wastewater from the wastewater treatment system. [11] A method of treating wastewater according to claim 10, wherein the pH of the wastewater is checked after the wastewater has passed through at least one static mixer arranged on the discharge line and valve assembly, wherein when the pH is between 5.0 and 8.0, a selector valve assembly is opened and the wastewater flows out of the wastewater treating system, and when the pH is less than 5.0 or greater than 8.0, the selector valve assembly is closed and the wastewater flows back into at least one reactor tank assembly. [12] A method for treating wastewater according to claim 10, wherein variable amounts of wastewater are held in a buffer zone of the at least one reactor tank arrangement. [13] A process for treating waste water according to claim 12, including recirculating waste water streams at variable rates. [14] A method of treating wastewater according to claim 13, wherein water having a flow rate of about 2,500 to 10,000 gallons per minute is used. [15] A wastewater treatment process according to claim 10, including controlling the wastewater flow with at least one recirculation pump, a buffer zone and a parallel reactor tank arrangement. [16] A method of treating wastewater according to claim 10, wherein the wastewater is directed into a distribution channel and the wastewater is distributed substantially uniformly over the surface of the wastewater already in the at least one reactor tank arrangement. [17] A process for treating waste water according to claim 10, wherein larger particles and deposits are collected from the waste water stream using at least one bag screen. [18] A method for treating waste water according to claim 10, wherein the change between leading and parallel waste water flows is carried out at least manually or automatically. [19] A wastewater treatment system comprising: at least one reactor tank assembly; a distribution channel of the at least one reactor tank arrangement, which is suitable for receiving waste water and for distributing this waste water substantially evenly over the surface of the waste water already present in the at least one reactor tank arrangement; the at least one reactor tank arrangement is designed to operate with at least one second reactor tank arrangement in lead-delay streams and parallel streams, wherein changes between lead-delay streams and parallel streams are performed manually and / or automatically; at least one inlet line and valve assembly coupled to the at least one reactor tank assembly and configured to direct wastewater into the at least one reactor tank assembly through at least one inlet header port assembly disposed at an upper portion of the at least one reactor tank assembly; at least one drain pipe and valve assembly coupled through at least one outlet port assembly of the at least one reactor tank assembly for directing wastewater out of the at least one reactor tank assembly; at least one return line and valve arrangement of the at least one drain line and valve arrangement, which is designed to direct at least a portion of the wastewater flowing out of the at least one reactor tank arrangement back into at least one reactor tank arrangement when required; at least one circulation pump assembly disposed on the at least one drain line and valve assembly; at least one carrier injection pump assembly, the at least one carrier injection pump assembly being configured to pump a portion of the wastewater supplied thereto as a secondary wastewater stream flowing through the at least one drain line and valve assembly; at least one continuous mixer operatively disposed at a bottom portion of each reactor tank assembly and adapted to mix the wastewater in the at least one reactor tank assembly, including, if present, the wastewater withdrawn from at least one reactor tank assembly and reintroduced into the at least one reactor tank assembly through the at least one return line and valve assembly; at least one pH sensor arrangement disposed at least partially within the wastewater stream and operatively coupled to at least one computer system, wherein the at least one computer system is adapted to control the introduction of at least one or more acids from at least one acid storage reactor tank and a valve arrangement operatively coupled to the wastewater stream, and a caustic from at least one caustic storage reactor tank and a valve arrangement operatively coupled to the wastewater stream, wherein the at least one or more acids and caustic are used to alter the pH of the wastewater, wherein the at least one or more acids and caustic are introduced to the wastewater as the wastewater flows through one or more streams of the discharge line and valve arrangement; and one or more of a group of: temperature sensors disposed in at least one or more of the reactor tank assemblies and piping and valve assemblies, pressure sensors disposed in at least one or more of the reactor tank assemblies, and flow sensors disposed in at least one or more of the piping and valve assemblies. [20] A wastewater treatment system according to claim 19, wherein at least one static mixer is arranged on the discharge line and valve assembly and at least one pH sensor is arranged on the discharge line and valve assembly after the static mixer, the pH sensor being adapted to measure the pH of the wastewater after the wastewater has passed through the static mixer, and when the pH is between 5.0 and 8.0 inclusive, a selector valve is opened and the wastewater flows out of the wastewater treatment system, and when the pH is less than 5.0 or greater than 8.0, the selector valve assembly is closed and the wastewater flows back into a reactor tank assembly. [21] A wastewater treatment system according to claim 19, wherein the at least one reactor tank assembly includes a buffer zone adapted to accommodate variable amounts of wastewater. [22] A wastewater treatment system according to claim 19, wherein the flow rate variability is between 2,500 and 10,000 gallons per minute. [23] A wastewater treatment system according to claim 22, wherein the recirculation pump assemblies are designed to process different flow rates of the wastewater. [24] A wastewater treatment system according to claim 22, wherein the flow rate variability ranges are controllable by the at least one recirculation pump, the buffer zone and the parallel reactor tank arrangement. [25] A wastewater treatment system according to claim 19, wherein at least one bag screen disposed in the effluent stream is adapted to capture particles and contaminants from the wastewater stream. [26] A wastewater treatment system according to claim 19, wherein the at least one reactor unit comprises at least one propeller unit suitable for mixing the wastewater.

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