CN111423054A

CN111423054A - Novel glass fiber wastewater treatment process

Info

Publication number: CN111423054A
Application number: CN202010179783.XA
Authority: CN
Inventors: 吴竹林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-07-17

Abstract

The invention discloses a novel glass fiber wastewater treatment process, which comprises the following steps: firstly, introducing the wastewater into an adjusting tank, then sending the wastewater into a coagulation reaction tank, adding a neutralizing agent, taking neutralized supernatant, carrying out biochemical treatment on the supernatant, sending the biochemically treated supernatant into a secondary sedimentation tank, sending detected supernatant into a high-efficiency filter tank after the supernatant is qualified, reusing filtered liquid, sending the precipitate into a concentration tank, concentrating to obtain sludge, sending the sludge into a belt type filter press machine room, and extruding to obtain sludge cakes. In order to ensure that effluent suspended matters and chromaticity reach the standard, the novel glass fiber wastewater treatment process is provided with a PAC (polyaluminium chloride) and PAM (polyacrylamide) adding device at the water outlet of an aerobic tank in a biochemical treatment section, so that the reaction speed is accelerated, the medicament dosage is reduced, the sludge production is reduced, and secondly, in order to adapt to the existing environment-friendly situation, improve and optimize the process flow and equipment, the novel glass fiber wastewater treatment process is efficient and simple.

Description

Novel glass fiber wastewater treatment process

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a novel glass fiber wastewater treatment process.

Background

The glass fiber industry of China is in the top world, the production capacity of glass fibers is the top, the environment protection situation of China is getting stricter, the supervision on waste water and waste gas is strict, and enterprises are prompted to adopt more advanced and efficient waste water treatment processes.

The glass fiber waste water is an organic waste water, its property is related to the kind of impregnating compound contained, mainly lipid, emulsifier, water-soluble organic matter, toxic substance, a small amount of glass fibre and residue, when producing the glass fiber, in order to make it soft and flexible, must spray brightening agent prepared from unsaturated polyester resin, petroleum ether, mechanical lubricating oil and other chemical raw materials to it before cooling, and discharge with the cooling water together, thus produce the waste water of producing the glass fiber of milk white, influence recovery and reuse of resources, secondly, at present, the glass fiber waste water treatment mainly includes physical method and biochemical method, wherein the biochemical method generally includes activated sludge process and biomembrane method, for treating the glass fiber waste water, the characteristic of the activated sludge process is that the process is mature, the method is simple, but the acclimation cycle is longer, the efficiency is lower. The biomembrane process features high bioactivity, short metabolism period, less biomass and poor impact resistance, and thus, it provides a new type of glass fiber waste water treating process.

Disclosure of Invention

The invention mainly aims to provide a novel glass fiber wastewater treatment process which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a novel glass fiber wastewater treatment process comprises the following steps:

(1) firstly, introducing the wastewater into a regulating tank, regulating the water yield and the water quality of the wastewater, then delivering the wastewater into a coagulation reaction tank, and adding a neutralizer;

(2) taking the supernatant neutralized in the step (1), carrying out biochemical treatment on the supernatant, and sending the bottom precipitate into a concentration tank for sludge concentration;

(3) sending the supernatant after biochemical treatment into a secondary sedimentation tank for secondary sedimentation, and sending the sludge after sedimentation into a concentration tank;

(4) detecting the supernatant obtained after the secondary precipitation in the step (3), sending the qualified supernatant into a high-efficiency filter to remove floating matters and chroma, and reusing the filtered liquid;

(5) and (4) conveying the sludge obtained after the concentration in the concentration tank into a belt type filter press machine room for dehydration, and extruding to obtain a mud cake.

Preferably, in the step (1), the wastewater comprises treating compound wastewater and rinsing wastewater.

Preferably, in step (1), the neutralizing agent comprises PAC, PAM, NaOH, iron salts and polyferric.

Preferably, in the step (2), the biochemical treatment comprises the following steps:

(2.1) firstly, sending the supernatant into an anaerobic tank for anaerobic treatment, and then sending into an anoxic tank for anoxic treatment;

and (2.2) after the anoxic treatment in the anoxic tank, sending the supernatant into an aeration tank, adding PAC and PAM, and performing neutralization reaction again.

Preferably, in the step (4), the detection result includes the following conditions:

A. when the concentration of each pollutant in the supernatant is detected to be qualified, sending the supernatant into a high-efficiency filter tank for filtering;

B. and when the concentration of each pollutant in the supernatant is unqualified, carrying out biochemical treatment again to supplement microorganisms.

Preferably, in the step (5), the water content of the mud cake is 75-82%.

Compared with the prior art, the invention has the following beneficial effects:

in order to ensure that the effluent suspended matter and the chromaticity reach the standard, the invention arranges a PAC and PAM adding device at the water outlet of the aerobic tank in the biochemical treatment section, thereby accelerating the reaction speed, reducing the medicament dosage and reducing the sludge production.

Drawings

FIG. 1 is a block diagram of a novel fiberglass wastewater treatment process of the present invention;

FIG. 2 is a system diagram of a novel fiberglass wastewater treatment process of the present invention;

FIG. 3 is a graph showing the content of wastewater before treatment in the novel glass fiber wastewater treatment process of the present invention;

FIG. 4 is a content diagram of the wastewater quality after treatment in the novel glass fiber wastewater treatment process of the invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Comparative example

At present, the treatment of glass fiber wastewater mainly comprises a physical method and a biochemical method.

The biochemical method generally comprises an activated sludge method and a biofilm method, and for treating the glass fiber wastewater, the activated sludge method is characterized by mature process, simple method, longer domestication period and lower efficiency, and the biofilm method is characterized by high biological activity, short metabolic period, less biomass and poor impact resistance.

And the physical method is to filter the wastewater to separate the various substances in the wastewater, but due to the majority of the substances.

Examples

Referring to fig. 1, a novel glass fiber wastewater treatment process comprises the following steps:

(1) firstly, introducing the wastewater into a regulating tank, regulating the water yield and the water quality of the wastewater, then delivering the wastewater into a coagulation reaction tank, and adding a neutralizing agent, wherein the neutralizing agent comprises PAC, PAM, NaOH, ferric salt and polyferric, and the wastewater comprises treating compound wastewater and flushing wastewater;

(2) taking the supernatant neutralized in the step (1), carrying out biochemical treatment on the supernatant, and sending the sediment at the bottom into a concentration tank for sludge concentration, wherein the biochemical treatment comprises the following steps:

(2.2) after the anaerobic treatment in the anaerobic tank, sending the supernatant into an aeration tank, adding PAC and PAM, and performing neutralization reaction again;

(4) and (4) detecting the supernatant obtained after the secondary precipitation in the step (3), sending the qualified supernatant into a high-efficiency filter to remove floating materials and chroma, and reusing the filtered liquid, wherein the detection result comprises the following conditions:

B. when the concentration detection of each pollutant in the supernatant is unqualified, carrying out biochemical treatment again to supplement microorganisms;

(5) and (3) feeding the sludge obtained after the concentration in the concentration tank into a belt type filter press machine room for dehydration, and extruding to obtain a mud cake, wherein the water content of the mud cake is 75-82%.

When the device is used, firstly, treating agent wastewater and flushing wastewater are led into a regulating tank, water is added into the regulating tank and the water flow speed is controlled, so that the water yield and the water quality concentration of the wastewater are regulated, the wastewater can reach the treatment concentration and the water flow speed, then the wastewater is led into a coagulating sedimentation tank, PAC, PAM, NaOH, ferric salt and poly-iron are firstly added into the coagulating sedimentation tank before the wastewater is led into the coagulating sedimentation tank, impurities in the wastewater are precipitated, the wastewater is kept stand and layered to obtain supernatant and first precipitate, then the supernatant is led into an anaerobic tank, the impurities in the wastewater are decomposed by anaerobic microorganisms, the wastewater is led into an anoxic tank after the decomposition is finished, the organic matters in the wastewater are decomposed again by the microorganisms in the anoxic tank, finally the wastewater is fed into an aeration tank for aeration, and PAC and PAM are simultaneously added into the aeration tank for biochemical treatment, so that COD, oxygen demand, chemical, NH3-N and TP, then sending the sewage after biochemical treatment into a secondary sedimentation tank, standing and filtering to obtain liquid, sending the liquid into a high-efficiency filter tank, further removing suspended matters and chromaticity, detecting the wastewater, filtering the secondary sedimentation tank to obtain liquid, sending the liquid into an anaerobic tank after unqualified detection, carrying out biochemical treatment again to improve the microorganism content in the wastewater, reusing the liquid as reclaimed water in a plant area as washing and greening water after qualified detection, obtaining a secondary precipitate after filtering the high-efficiency filter tank and obtaining a primary precipitate with a coagulating sedimentation tank, putting the primary precipitate and the secondary precipitate into a concentration tank for dehydration, sending the dehydrated sludge into a belt type filter press machine room for filter pressing to obtain a filter-pressed sludge cake.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A novel glass fiber wastewater treatment process is characterized by comprising the following steps:

2. The novel glass fiber wastewater treatment process according to claim 1, characterized in that: in the step (1), the wastewater comprises treating compound wastewater and rinsing wastewater.

3. The novel glass fiber wastewater treatment process according to claim 1, characterized in that: in the step (1), the neutralizer comprises PAC, PAM, NaOH, iron salt and polyferric.

4. The novel glass fiber wastewater treatment process according to claim 1, characterized in that: in the step (2), the biochemical treatment comprises the following steps:

5. The novel glass fiber wastewater treatment process according to claim 1, characterized in that: in the step (4), the detection result includes the following conditions:

6. The novel glass fiber wastewater treatment process according to claim 1, characterized in that: in the step (5), the water content of the mud cake is 75-82%.