CN214004283U

CN214004283U - Contain processing apparatus of cyanogen, nickel and total phosphorus mixed waste water

Info

Publication number: CN214004283U
Application number: CN202022818272.6U
Authority: CN
Inventors: 吴渤; 陈祥衡; 石杨; 王青龙; 王小广
Original assignee: Shenzhen Zhongke Outaihua Environmental Protection Technology Co ltd
Current assignee: Shenzhen Zhongke Outaihua Environmental Protection Technology Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-08-20
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a contain processing apparatus of cyanogen, nickel and total phosphorus mixed waste water, including consecutive mixed waste water equalizing basin (1), one-level reaction tank (2), second grade reaction tank (3), sedimentation tank (4) and comprehensive equalizing basin (5), the sedimentation tank still links to each other with retrieval and utilization pond (6), one-level reaction tank (2) link to each other with hydroxyl radical generator (7), second grade reaction tank (3) link to each other with NaOH container (8), PAC container (9) and PAM container (10). The treatment device for the mixed wastewater containing cyanogen, nickel and total phosphorus is adopted to carry out wastewater treatment without respective treatment, a proper amount of alkali is added to adjust the pH value, and cyanogen, nickel and total phosphorus are mixed together to carry out treatment, so that a method for thoroughly changing the original treatment process is formed.

Description

Contain processing apparatus of cyanogen, nickel and total phosphorus mixed waste water

Technical Field

The utility model relates to a waste water treatment field especially relates to a processing apparatus who contains cyanogen, nickel and total phosphorus mixed waste water.

Background

The sewage treatment industry in China is rapidly developed in the last forty years of reform and opening, but the advantages of the sewage treatment industry are still lagged behind the needs of urban development. On one hand, the water is seriously deficient, and on the other hand, a large amount of sewage is discharged and flows into polluted water bodies of rivers, lakes and seas. With the development of economy, the sewage treatment technology in China develops own technology while absorbing and digesting foreign technologies. The bubbling method introduced from abroad, the A2/O method, the oxidation ditch method, the AB method, the ABC and S B R methods, the biomembrane method, the high-pressure membrane method and the like appeared in recent years, but the technologies have the problems of higher construction cost and operation cost, waiting for improvement of treatment efficiency and the like to different degrees. The sewage equipment in China has the defects of low efficiency, high energy consumption, high maintenance rate, low automation degree and the like. At present, the existing sewage treatment equipment in China has the running conditions of 1/3 normal running, 1/3 abnormal running and 1/3 stopped, and the whole treatment process technology is still to be improved.

As for the treatment process of wastewater containing cyanogen or nickel and total phosphorus, the treatment method is usually a method for respectively treating the wastewater originally, and the treatment method can also remove heavy metals and ensure that the wastewater can reach the discharge standard; but the process is relatively complicated, the occupied area is large, the operation is troublesome, the construction cost is high, particularly in the actual operation, the nickel plating and gold plating (generating cyanide) processes are adjacent processes, the actual application divides water, the cyanide-containing water contains nickel, and the nickel-containing water contains cyanide; after the independent test treatment, the cyanide in the cyanide-containing water reaches the standard, but the nickel possibly exceeds the standard, and the further treatment by adding the medicament is needed in order to reach the standard; after the single test treatment, the nickel in the nickel-containing water reaches the standard, but cyanide exceeds the standard, and similarly, the chemical agent is required to be added for further treatment in order to reach the standard. Meanwhile, the nickel-containing wastewater also contains a considerable amount of total phosphorus, wherein metaphosphate and nickel can form a stable complex, so that nickel and phosphorus are treated together, the possibility of exceeding standards is caused by respective treatment, and the treatment is carried out by adding a medicament for reaching the standards. For the treatment method, the treatment effects are all uneven, the treatment effects are mutually influenced, the standard reaching is unstable, the problems are not completely solved, the standard reaching of the wastewater treatment is influenced, and the problem of the wastewater treatment is solved. Most importantly, the problems caused by separate treatment of the wastewater can cause high wastewater treatment cost and make the wastewater unacceptable to enterprises. In order to solve the problem of stable standard reaching of wastewater containing cyanogen, nickel and total phosphorus, research on a novel process technology for stable standard reaching of the mixed wastewater is urgently needed. The treatment method of the mixed wastewater is still blank and lacks a corresponding device.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a technique is according to former traditional defect of handling process respectively, provides a processing apparatus who contains cyanogen, nickeliferous and total phosphorus mixed waste water, adopts the device not to need to handle respectively, adds proper amount alkali and adjusts pH value, will contain cyanogen, nickeliferous and total phosphorus and mix together and handle, forms a method that thoroughly changes former processing technology. The process adopts the on-line addition of a novel oxidant, namely hydroxyl free radicals, breaks the complexation of heavy metal ions through the strong oxidability of the hydroxyl free radicals, and then reaches the discharge standard through coagulating sedimentation.

The utility model discloses contain cyanogen, nickel and total phosphorus mixed waste water's processing apparatus, including consecutive mixed waste water equalizing basin, one-level reaction pond, second grade reaction tank, sedimentation tank and comprehensive equalizing basin, the sedimentation tank still links to each other with the retrieval and utilization pond, one-level reaction tank links to each other with hydroxyl radical generator, second grade reaction tank links to each other with NaOH container, PAC container and PAM container.

The device of the utility model, wherein the primary reaction tank is provided with an inlet for mixing waste water and an oxidant feeding port; the secondary reaction tank is provided with a mixed wastewater inlet, a NaOH feeding port, a PAC feeding port and a PAM feeding port; an inlet for mixed wastewater is arranged on the sedimentation tank; an inlet and a waste water discharge port for mixed waste water are arranged on the comprehensive adjusting tank, and an inlet for mixed waste water is arranged on the recycling tank.

The device, wherein the one-level reaction tank with all be provided with the agitator in the second grade reaction tank.

The utility model discloses contain cyanogen, nickel and total phosphorus mixed wastewater's processing apparatus lies in with prior art difference:

adopt the utility model discloses contain the processing apparatus of cyanogen, nickel and total phosphorus mixed waste water to carry out waste water treatment, including CN^-、Ni²⁺With total phosphorus in the lump, adopt the oxidation of hydroxyl free radical and the processing of heavy metal separation, contain cyanogen, nickeliferous and total phosphorus mixed wastewater's processing method has broken the method of original branch processing, adopts and throws hydroxyl free radical on line in mixed wastewater, through its strong oxidizing property, breaks heavy metal ion's complex, through coagulating sedimentation separation again, all realize discharge to reach standard, is a new technology of waste water treatment.

The method of the utility model can not only treat various waste water together, but also stably discharge the waste water up to standard, compared with the prior method of separate treatment, the method has good results in the problems of treatment process, construction investment, treatment effect and treatment cost, and particularly greatly reduces the waste water treatment cost; under the condition of the same wastewater treatment capacity, 3 kinds of wastewater are respectively treated, the cost required by standard discharge is different from 40-50 yuan/t of wastewater, after improvement, mixed wastewater treatment is carried out, the cost required by standard discharge is only about 5 yuan/t of wastewater, the cost is reduced remarkably, and the high praise and acceptance of customers are obtained. The adoption of the wastewater treatment process technology breaks through the original traditional treatment method, and the mixed wastewater treatment is a bolded attempt without a precedent, so that the aim of simultaneously removing cyanogen, nickel and total phosphorus is fulfilled, the treatment effect is obviously improved, and various technical indexes achieve ideal effects, so to say, the first guideline in the industry is provided. Particularly, the original national standard aiming at the nickel emission standard is 0.1mg/L, and the index can not be achieved by all the current processing technical methods, so the emission standard is widened to 0.5 mg/L. However, the novel process technology of the utility model can reach the original national emission standard. The utility model discloses so can reach better treatment effect, the most important has adopted novel oxidant, has played very critical effect for the processing of mixing waste water, just has the new technology that various waste water mix the back and handle in the lump, just can ensure that the processing of heavy metal is up to standard, has solved a difficult problem of relevant enterprise waste water treatment, provides a new technology for the waste water treatment trade, can exert irreplaceable important action in the trade.

Adopt the utility model discloses the device carries out waste water treatment, not only to the waste water treatment in the trade, improves reliability up to standard, reduces treatment cost, reduces to the pollution aspect of water, has all played very important effect, but also to whole water treatment field, especially the solution of difficult problem in the aspect of industrial waste water treatment, reduces the investment, and energy saving and consumption reduction etc. all have the positive promotion effect, reach the advanced level of domestic and foreign waste water treatment process technology.

The following will further explain the treatment device of the mixed wastewater containing cyanogen, nickel and total phosphorus of the present invention with reference to the attached drawings.

Drawings

FIG. 1 is a schematic structural diagram of a device for treating cyanide, nickel and total phosphorus-containing mixed wastewater.

Detailed Description

As shown in figure 1, the device for treating the mixed wastewater containing cyanogen, nickel and total phosphorus comprises a mixed wastewater adjusting tank 1, a primary reaction tank 2, a secondary reaction tank 3, a sedimentation tank 4 and a comprehensive adjusting tank 5 which are sequentially connected, wherein the sedimentation tank is also connected with a recycling tank 6, the primary reaction tank 2 is connected with a hydroxyl radical generator 7, and the secondary reaction tank 3 is connected with a NaOH container 8, a PAC container 9 and a PAM container 10.

A mixed wastewater inlet and an oxidant feeding port are arranged on the primary reaction tank 2; an inlet for mixed wastewater, a NaOH adding port, a PAC adding port and a PAM adding port are arranged on the secondary reaction tank 3; an inlet for mixed wastewater is arranged on the sedimentation tank 4; the comprehensive adjusting tank 5 is provided with a mixed wastewater inlet and a wastewater discharge outlet, and the recycling tank 6 is provided with a mixed wastewater inlet; stirrers 11 are arranged in the first-stage reaction tank 2 and the second-stage reaction tank 3.

A treatment method of mixed wastewater containing cyanogen, nickel and total phosphorus specifically comprises the following steps:

(A) respectively collecting wastewater containing cyanogen, nickel and total phosphorus into a mixed wastewater adjusting tank 1, and carrying out centralized mixing to obtain mixed wastewater;

(B) sending the mixed wastewater into a primary reaction tank 2, adding an oxidant on line by adopting a hydroxyl radical generator 7, and carrying out oxidation reaction under stirring to break the complexation of heavy metal ions; the oxidant is hydroxyl free radical, the adding amount of the hydroxyl free radical is 10-25 g/t of wastewater, and the mixing and stirring time after the hydroxyl free radical is added is 30-40 minutes.

(C) Sending the mixed wastewater after reaction in the first-stage reaction tank 2 into a second-stage reaction tank 3, adding NaOH, adjusting the pH value of the wastewater to be more than or equal to 12 under stirring, and adding PAC and PAM for mixing to promote coagulation of reaction products; the concentration of PAC is 5%, the addition amount is 20-50 g/t of wastewater, the concentration of PAM is 5%, the addition amount is 0.5-2.0 g/t of wastewater, and the mixing and stirring time is 15 minutes.

(D) Sending the mixed wastewater after the reaction in the second-stage reaction tank 3 into a sedimentation tank 4 to ensure that the liquid-solid mixture realizes complete sedimentation and separation and CN is removed^-、Ni²⁺And total phosphorus;

(E) and (3) sending one part of the mixed wastewater separated from the sedimentation tank 4 to reuse, sending the other part of the mixed wastewater to the comprehensive regulating tank 5, merging, and discharging after all the mixed wastewater reaches the national discharge standard.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a processing apparatus who contains cyanogen, nickel and total phosphorus mixed waste water which characterized in that: including consecutive mixed waste water equalizing basin (1), one-level reaction pond (2), second grade reaction pond (3), sedimentation tank (4) and comprehensive equalizing basin (5), the sedimentation tank still links to each other with retrieval and utilization pond (6), one-level reaction pond (2) link to each other with hydroxyl radical generator (7), second grade reaction pond (3) link to each other with NaOH container (8), PAC container (9) and PAM container (10).

2. The apparatus for treating mixed wastewater containing cyanogen, nickel and total phosphorus according to claim 1, wherein: an inlet for mixed wastewater and an oxidant feeding port are arranged on the primary reaction tank (2); an inlet for mixed wastewater, a NaOH adding port, a PAC adding port and a PAM adding port are arranged on the secondary reaction tank (3); an inlet for mixed wastewater is arranged on the sedimentation tank (4); an inlet and a waste water discharge port for mixing waste water are arranged on the comprehensive adjusting tank (5), and an inlet for mixing waste water is arranged on the recycling tank (6).

3. The apparatus for treating mixed wastewater containing cyanogen, nickel and total phosphorus according to claim 2, wherein: stirrers (11) are arranged in the first-stage reaction tank (2) and the second-stage reaction tank (3).