CN103739110A - Glassware processing wastewater treatment technology - Google Patents

Abstract

The invention discloses a glassware processing wastewater treatment technology. The technology comprises the following steps: 1, processing wastewater is discharged to an oil separation pool, and water discharged from the oil separation pool flows to an adjustment pool; 2, wastewater discharged from the adjustment pool is pumped to a coagulation reaction pool, calcium hydroxide is added to wastewater to adjust the pH value to 7.5-8.5, a coagulant PAC and a flocculating agent PAM are added to carry out a coagulation reaction, the obtained wastewater automatically flows to an inclined tube sedimentation pool through a water distribution tank in order to realize solid-liquid separation, and sludge in a bucket is discharged to a sludge pool; 3, water discharged from the sedimentation pool automatically flows to a sand filter for sand filtration, and water discharged from the sand filter flows to a clear water pool; and 4, sludge in the inclined tube sedimentation pool is pumped to a sludge concentration pool through a sludge pump and is concentrated, the obtained sludge concentrate is press-dried to form sludge cakes, the sludge cakes are artificially cleaned and bagged, and a filtrate flows to a wastewater adjustment pool. The technology has the advantages of simplicity, increase of the processing capability of the sedimentation pool by utilizing a laminar flow principle, shortening the sedimentation time by shortening particle settlement distances, and increase of the processing efficiency by increasing the sedimentation area of the sedimentation pool.

Description

A kind of glasswork processing waste water treatment process

Technical field

The invention belongs to the processing of glass processing industrial circle waste water, the particularly processing of glass component waste generated by grinding and Cleaning Wastewater, specifically a kind of glasswork processing waste water treatment process.

Background technology

Glasswork is widely used in the fields such as building, daily, medical, chemical, household, electronics, instrument, nuclear engineering.

China's glass deep processing industry development is very fast.According to statistics, China glass deep processing enterprise approximately has family more than 4000 at present, post processed glass kind is kind more than 200 approximately, is no matter that the market supply of traditional household appliance glass, building glass, vehicle glass or novel energy-saving glass, solar energy glass, flat panel display glass etc. all increases comparatively fast.By the end of the year 2009, China's processed glass principal item is produced nearly 8.4 hundred million square metres per year, amounts to 2.1 hundred million loaded vans, and working modulus exceedes 36%.Glasswork produces a large amount of waste water in processing bruting process; if can carry out resource recovery and recycle to such trade effluent; to implementing the fundamental state policy of China's water saving and protection of the environment, be a contribution greatly, both there is great social effect, also there is significant economic benefit.At present this field wastewater treatment is not also had to maturation process.

Summary of the invention

The object of the present invention is to provide a kind of glasswork processing waste water treatment process.

Object of the present invention can be achieved through the following technical solutions:

A kind of glasswork processing waste water treatment process, is characterized in that, comprises the following steps:

(1) processing waste water enters oil trap, and oil trap water outlet flow to equalizing tank, and pneumatic blending regulates the waste water quality water yield;

(2) equalizing tank goes out water pump to coagulation reaction tank, start pneumatic blending 3min simultaneously, in waste water, add calcium hydroxide adjusting pH7.5-8.5, dosing coagulant PAC and flocculation agent PAM produce coagulating again, by distributing trough, from flowing to tube settler, carry out solid-liquid separation, in bucket, mud drains into sludge sump;

(3) settling tank water outlet is carried out sand filtration from flowing to sand filter, and water outlet flow to clean water basin;

(4) tube settler mud is evacuated to sludge thickener with sludge pump, and mud, after concentrated, be evacuated to plate-and-frame filter press with pneumatic diaphragm pump and dewater, and press dry rear mud cake labor cleaning pack, and filtrate is flowed back to wastewater equalization pond.

Beneficial effect of the present invention: technique of the present invention is simple, utilizes lamina flow principle, has improved the processing power of settling tank; Shorten particles settling distance, thereby shortened sedimentation time; Increase the desilting area of settling tank, thereby improved processing efficiency.

Embodiment

Below in conjunction with specific embodiment, the present invention is described in further detail.

The waste water quality index that certain Optical Co., Ltd factory discharges:

Treatment process of the present invention is:

The brief description of technical process:

(1) workshop waste water is removed after foreign material and bulk rubbish by each discharge outlet grid, by waste pipe, enters oil trap, removes oil etc., dregs of fat burning disposal at this.For subsequent disposal, there is good effect.Water outlet, from flowing in equalizing tank, regulates the waste water water yield, water quality at this by pneumatic blending, makes it even;

(2) the waste water pump of equalizing tank after mixing well is quantitatively evacuated to coagulation reaction tank, start after pneumatic blending 3.0min simultaneously, in waste water, throw calcium hydroxide, the process that adds is by PH instrument automatic monitoring, PH is controlled at 7.5～8.5 by PH instrument automatic monitoring, dosing coagulant PAC solution again, under the effect of coagulating agent PAC, in waste water, particulate state and colloidal pollutent form suspended solid precipitation automatically.Start after pneumatic blending 6.0min simultaneously, then drip a small amount of flocculation agent PAM solution toward waste water.Under the cohesion and bridging action of flocculation agent PAM, the flco that the further polymerization of suspended solid forming in waste water forms larger particles, carries out solid-liquid separation by distributing trough from flowing to tube settler, and the mud timing in bucket drains into sludge sump;

(3) settling tank water outlet is carried out sand filtration from flowing to sand filter, further removes small suspended substance and impurity in water body, guarantees that water outlet is up to standard.Water outlet flow to clean water basin for reuse or sand filtration, charcoal filter recoil water, qualified discharge;

(4) at sludge pump, to be evacuated to mud concentrated for tube settler mud, and mud, after concentrated, be evacuated to plate-and-frame filter press with pneumatic diaphragm pump and dewater, and press dry rear mud cake labor cleaning pack, and is transported to appointed place stacking, and filtrate is flowed back to wastewater equalization pond.

Through the present invention's effluent quality after treatment:

Sequence number	Pollutent title	Pollutant levels
			1	CODcr	≤90mg/L
2	BOD5	≤20mg/L
			3	SS	≤60mg/L
4	Petroleum-type	≤5.0mg/L
			5	PH	6～9

Above content is only to technique example of the present invention and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the technique of invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.

Claims (1)

1. a glasswork processing waste water treatment process, is characterized in that, comprises the following steps:

(1) processing waste water enters oil trap, and oil trap water outlet flow to equalizing tank, and pneumatic blending regulates the waste water quality water yield;

(2) equalizing tank goes out water pump to coagulation reaction tank, start pneumatic blending 3min simultaneously, in waste water, add calcium hydroxide adjusting pH7.5-8.5, dosing coagulant PAC and flocculation agent PAM produce coagulating again, by distributing trough, from flowing to tube settler, carry out solid-liquid separation, in bucket, mud drains into sludge sump;

(3) settling tank water outlet is carried out sand filtration from flowing to sand filter, and water outlet flow to clean water basin;

(4) tube settler mud is evacuated to sludge thickener with sludge pump, and mud, after concentrated, be evacuated to plate-and-frame filter press with pneumatic diaphragm pump and dewater, and press dry rear mud cake labor cleaning pack, and filtrate is flowed back to wastewater equalization pond.