Efficient treatment equipment for chemical nickel rinsing water

Abstract

The utility model discloses efficient treatment equipment for chemical nickel rinsing water, which belongs to the technical field of sewage treatment equipment and comprises a waste liquid tank, pretreatment integrated equipment and oxidation treatment integrated equipment which are connected in sequence, and a complexing agent breaking high-level tank is arranged above the pretreatment integrated equipment; the complexing agent breaking high-level tank is communicated with the upper part of the pretreatment integrated equipment through a first pipe, a recapturing agent high-level tank is arranged above the oxidation treatment integrated equipment, the recapturing agent high-level tank is communicated with the upper part of the oxidation treatment integrated equipment through a seventh pipe, and an external pipe is arranged on the oxidation treatment integrated equipment; according to the device disclosed by the utility model, pretreatment is adopted to break complexation and remove phosphorus, so that the dosage of a subsequent Fenton oxidation agent can be greatly reduced, the nickel phosphorus removal effect is good, meanwhile, the pH can be adjusted back, the pH of pretreated effluent is controlled in an optimal range, and after Fenton oxidation, a recapturing agent is combined for treatment, so that the nickel surface III standard can be met, and the emission requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment equipment technical field, more specifically, relate to a kind of chemical nickel rinsing water efficient treatment equipment. BACKGROUND

[0002] Chemical nickel rinsing water is mainly produced in the production process of plastic electroplating, hardware, printed circuit board and other industries in chemical nickel plating, and it is wastewater for cleaning parts, there are a large number of complex state nickel ions, phosphite, hypophosphite, ammonia nitrogen and organic pollutants such as stabilizer, accelerator in the wastewater. Since the form of phosphorus in chemical nickel rinsing water is basically hypophosphite and phosphite, it is difficult to remove hypophosphite from wastewater by forming a precipitate with metal, and the composition of pollutants in wastewater is complex, which makes it difficult to meet the standard for chemical nickel wastewater discharge.

[0003] At present, the traditional treatment process mainly oxidizes hypophosphite in chemical nickel rinsing water into orthophosphorus by adding sodium hypochlorite or fenton reagent, and then removes orthophosphorus by adding metal salt reagent. However, due to the limited oxidation efficiency, hypophosphite cannot be completely removed, resulting in difficulty in meeting the standard for nickel and phosphorus after treatment. In addition, the amount of sludge generated by direct oxidation treatment increases, and the treatment cost is relatively high. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of chemical nickel rinsing water efficient treatment equipment to solve the problems in the above background technology.

[0005] According to the first aspect of the utility model, a kind of chemical nickel rinsing water efficient treatment equipment is provided, including waste liquid tank, pre-treatment integrated equipment and oxidation treatment integrated equipment connected in sequence, the upper portion of the pre-treatment integrated equipment is provided with a high position tank of complex breaker, the upper portion of the pre-treatment integrated equipment is communicated with the high position tank of complex breaker by first pipe, the upper portion of the oxidation treatment integrated equipment is provided with a high position tank of heavy trapping agent, the upper portion of the oxidation treatment integrated equipment is communicated with the high position tank of heavy trapping agent by seventh pipe, the oxidation treatment integrated equipment is provided with external connection pipe, and the external connection pipe is used to connect the equipment of next step process.

[0006] In a specific embodiment of the utility model, the upper portion of the pre-treatment integrated equipment is provided with a first polyacrylamide high position tank, and the upper portion of the pre-treatment integrated equipment is communicated with the first polyacrylamide high position tank by third pipe.

[0007] In a specific embodiment of the utility model, the upper portion of the pre-treatment integrated equipment is further provided with a sulfuric acid high position tank, the upper portion of the pre-treatment integrated equipment is communicated with the sulfuric acid high position tank by second pipe, and the sulfuric acid high position tank is arranged between the first polyacrylamide high position tank and the complex breaker high position tank.

[0008] In a specific embodiment of the utility model, the upper part of the oxidation treatment integrated equipment is sequentially provided with a ferrous sulfate high tank, a hydrogen peroxide high tank, a lime high tank, a polyaluminum chloride high tank and a second polyacrylamide high tank, the ferrous sulfate high tank is communicated with the upper part of the oxidation treatment integrated equipment through a fourth pipe, the hydrogen peroxide high tank is communicated with the upper part of the oxidation treatment integrated equipment through a fifth pipe, the lime high tank is communicated with the upper part of the oxidation treatment integrated equipment through a sixth pipe, the polyaluminum chloride high tank is communicated with the upper part of the oxidation treatment integrated equipment through an eighth pipe, and the second polyacrylamide high tank is communicated with the upper part of the oxidation treatment integrated equipment through a ninth pipe.

[0009] In a specific embodiment of the utility model, the heavy trapping agent high tank is arranged between the lime high tank and the polyaluminum chloride high tank.

[0010] In a specific embodiment of the utility model, the pretreatment integrated equipment and the oxidation treatment integrated equipment are communicated through an eleventh pipe, and a water production lifting pump is installed on the eleventh pipe.

[0011] In a specific embodiment of the utility model, the pretreatment integrated equipment is provided with a first pH on-line instrument, and the oxidation treatment integrated equipment is provided with a second pH on-line instrument.

[0012] In a specific embodiment of the utility model, the waste liquid tank is communicated with the upper part of the pretreatment integrated equipment through a tenth pipe, and a waste liquid lifting pump is installed on the tenth pipe.

[0013] The above technical solution of the utility model has at least one of the following advantages or beneficial effects:

[0014] The utility model discloses a pretreatment integrated equipment and an oxidation treatment integrated equipment, and the pretreatment integrated equipment is provided with a ferrous sulfate high tank, a hydrogen peroxide high tank, a lime high tank, a polyaluminum chloride high tank, a polyacrylamide high tank, a heavy trapping agent high tank, a waste liquid tank, a first pH on-line instrument, a second pH on-line instrument, a water production lifting pump and a waste liquid lifting pump. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in connection with the drawings and embodiments;

[0016] Figure 1 It is the structure schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation to the present application.

[0018] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation to the present application.

[0019] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more. Greater than, less than, more than, etc. are understood as not including the number itself, and above, below, etc. are understood as including the number itself. If it is described as first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.

[0021] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection or movable connection, or detachable connection or non-detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements, indirect communication or the interaction relationship between two elements.

[0022] The following disclosure provides many different embodiments or examples for implementing different aspects of the present application.

[0023] Reference is made to Figure 1As shown, a chemical nickel rinse water efficient treatment equipment is provided, which comprises a waste liquid tank 1, a pretreatment integrated equipment 3 and an oxidation treatment integrated equipment 8 connected in sequence, a complex breaker high tank 4 is arranged above the pretreatment integrated equipment 3, the complex breaker high tank 4 is communicated with the upper part of the pretreatment integrated equipment 3 through a first pipe 41, a heavy trapping agent high tank 12 is arranged above the oxidation treatment integrated equipment 8, the heavy trapping agent high tank 12 is communicated with the upper part of the oxidation treatment integrated equipment 8 through a seventh pipe 121, an external pipe 16 is arranged on the oxidation treatment integrated equipment 8, and the external pipe 16 is used for connecting the equipment of the next step.

[0024] In the embodiment, the complex breaker high tank 4 is used for placing a complex breaker, phosphorus can be removed by using the complex breaker first, the addition amount of the subsequent Fenton oxidation reagent can be reduced, the nickel-phosphorus removal effect is good, most of the hypophosphite and orthophosphorus can be effectively removed, and the pH can be adjusted at the same time, so that the pretreatment effluent pH is controlled in the optimal pH range of Fenton oxidation, the complex breaker can remove most of the hypophosphite, and more than 95% of the orthophosphorus can also be removed, and after Fenton oxidation, the heavy trapping agent in the heavy trapping agent high tank 12 is added to the oxidation treatment integrated equipment 8, so that the nickel content in the effluent can meet the standard and meet the discharge requirements.

[0025] In an embodiment of the utility model, a first polyacrylamide high tank 6 is arranged above the pretreatment integrated equipment 3, and the polyacrylamide high tank is also called a PAM high tank, so as to provide stable PAM solution to the system, PAM is an important water treatment agent, and is mainly used for flocculation, clarification and purification of water bodies, the first polyacrylamide high tank 6 is communicated with the upper part of the pretreatment integrated equipment 3 through a third pipe 61, and is added to the pretreatment integrated equipment 3 through the third pipe 61, and the suspended solids and impurities in water are removed through flocculation, so as to improve water quality.

[0026] Further, a sulfuric acid high tank 5 is further arranged above the pretreatment integrated equipment 3, the sulfuric acid high tank 5 is communicated with the upper part of the pretreatment integrated equipment 3 through a second pipe 51, and the sulfuric acid high tank 5 is arranged between the first polyacrylamide high tank 6 and the complex breaker high tank 4, the sulfuric acid high tank 5 is used for storing sulfuric acid, and is mainly used for stably adjusting the pH of waste water in cooperation with the complex breaker, so that the pH of waste water can be controlled at about 2.8 to 3, the cost of Fenton oxidation for adjusting acid is saved, and the cost of acid reagent is saved.

[0027] In one embodiment of the utility model, the upper portion of the oxidation treatment integrated equipment 8 is sequentially provided with a ferrous sulfate high tank 9, a hydrogen peroxide high tank 10, a lime high tank 11, a polyaluminum chloride high tank 13 and a second polyacrylamide high tank 14, the ferrous sulfate stored in the ferrous sulfate high tank 9 can mainly act as a flocculating agent, a precipitating agent, a reducing agent and a pH regulator, the ferrous sulfate can reduce some pollutants in water, such as hexavalent chromium, to trivalent chromium with lower toxicity, thereby facilitating subsequent treatment or making it meet the discharge standard; the hydrogen peroxide stored in the hydrogen peroxide high tank 10 can disinfect and sterilize and remove pollutants; the lime in the lime high tank 11 is added after Fenton oxidation to adjust the pH and further remove phosphorus in wastewater, thereby ensuring that the phosphorus in the wastewater is effectively removed; the polyaluminum chloride high tank is also called a PAC high tank, PAC is an inorganic high molecular coagulant with multiple functions such as water purification, sterilization, deodorization, degreasing and turbidity removal; the second polyacrylamide high tank 14 has the same effect as the first polyacrylamide high tank 6; the ferrous sulfate high tank 9 is in communication with the upper portion of the oxidation treatment integrated equipment 8 through a fourth pipe 91, the hydrogen peroxide high tank 10 is in communication with the upper portion of the oxidation treatment integrated equipment 8 through a fifth pipe 101, the lime high tank 11 is in communication with the upper portion of the oxidation treatment integrated equipment 8 through a sixth pipe 111, the polyaluminum chloride high tank 13 is in communication with the upper portion of the oxidation treatment integrated equipment 8 through an eighth pipe 131, and the second polyacrylamide high tank 14 is in communication with the upper portion of the oxidation treatment integrated equipment 8 through a ninth pipe 141.

[0028] Further, the heavy trapping agent high tank 12 is arranged between the lime high tank 11 and the polyaluminum chloride high tank 13.

[0029] In one embodiment of the utility model, the pretreatment integrated equipment 3 and the oxidation treatment integrated equipment 8 are in communication through an eleventh pipe 18, and a water production lifting pump 7 is installed on the eleventh pipe 18, the main function of the water production lifting pump 7 being to prevent liquid backflow.

[0030] In one embodiment of the utility model, the pretreatment integrated equipment 3 is provided with a first pH online instrument 151, and the oxidation treatment integrated equipment 8 is provided with a second pH online instrument 152, the first pH online instrument 151 can monitor the change of the pH in the pretreatment integrated equipment 3 in real time, and the second pH online instrument 152 can monitor the change of the pH in the oxidation treatment integrated equipment 8 in real time.

[0031] In one embodiment of the utility model, the waste liquid tank 1 is in communication with the upper portion of the pretreatment integrated equipment 3 through a tenth pipe 17, and a waste liquid lifting pump 2 is installed on the tenth pipe 17, the main function of the waste liquid lifting pump 2 also being to prevent liquid backflow.

[0032] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A high-efficiency treatment apparatus for chemical nickel rinse water, comprising a waste liquid tank (1), a pretreatment integrated apparatus (3), and an oxidation treatment integrated apparatus (8) connected in series, characterized in that, The upper part of the pretreatment integrated device (3) is provided with a complex breaker high tank (4) which is communicated with the upper part of the pretreatment integrated device (3) through a first pipe (41), the upper part of the oxidation treatment integrated device (8) is provided with a heavy trapping agent high tank (12) which is communicated with the upper part of the oxidation treatment integrated device (8) through a seventh pipe (121), and the oxidation treatment integrated device (8) is provided with an external pipe (16) which is used for connecting the device of the next step.

2. The chemical nickel rinse water high efficiency treatment apparatus according to claim 1, characterized by, The upper part of the pretreatment integrated device (3) is provided with a first polyacrylamide high tank (6) which is communicated with the upper part of the pretreatment integrated device (3) through a third pipe (61).

3. The apparatus for efficiently treating rinse water of electroless nickel according to claim 2, wherein The upper part of the pretreatment integrated device (3) is provided with a first polyacrylamide high tank (6) which is communicated with the upper part of the pretreatment integrated device (3) through a third pipe (61).

4. The apparatus for efficiently treating rinse water of electroless nickel according to claim 1, wherein The upper part of the pretreatment integrated device (3) is provided with a first polyacrylamide high tank (6) which is communicated with the upper part of the pretreatment integrated device (3) through a third pipe (61).

5. The apparatus for efficiently treating rinse water of electroless nickel according to claim 4, wherein The upper part of the pretreatment integrated device (3) is provided with a first polyacrylamide high tank (6) which is communicated with the upper part of the pretreatment integrated device (3) through a third pipe (61).

6. The apparatus for efficiently treating rinse water of electroless nickel according to claim 1, wherein The heavy trapping agent high tank (12) is arranged between the lime high tank (11) and the polyaluminum chloride high tank (13).

7. The apparatus for efficiently treating rinse water of electroless nickel according to claim 1, wherein The pretreatment integrated device (3) and the oxidation treatment integrated device (8) are communicated through an eleventh pipe (18), and a water production lifting pump (7) is installed on the eleventh pipe (18).

8. The apparatus for efficiently treating rinse water of electroless nickel according to claim 1, wherein The pretreatment integrated device (3) is provided with a first pH online instrument (151), and the oxidation treatment integrated device (8) is provided with a second pH online instrument (152). The waste liquid tank (1) is communicated with the upper part of the pretreatment integrated device (3) through a tenth pipe (17), and a waste liquid lifting pump (2) is installed on the tenth pipe (17).

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