CN204824512U - Physics formula pretreatment systems of waste water of paper mill - Google Patents

Abstract

The utility model discloses a physics formula pretreatment systems of waste water of paper mill, its characterized in that, this system is including adjusting catch basin, grid, grit chamber, physics filtering ponds, ice bars, electromagnetism absorption pond, air supporting pond, storing up mud sump, belt filter press. This system adopts low energy consumption environment -friendly ice bars equipment, and it is used and still belongs to the first time in papermaking wastewater treatment process, the organic matter got rid of difficulty exclusive in the papermaking waste water and small -size solid -state suspended solid to get rid of the effect obvious. This physical absorption processing system does not add any chemical reagent, does not adopt any biological treatment method, do not induce one mud, bacterial, and the clearance of suspended solid reaches 96.1%, chroma removal rate 90.1%, and the turbidity clearance 98.8%.

Description

A kind of physically pretreatment system of paper mill effluent

Technical field

The utility model relates to a kind of physically pretreatment system system of paper mill effluent, belongs to the water treatment field in environment protection.

Background technology

Along with the development of economy, improving constantly of standard of living, the protection of people to environment is more and more paid attention to, and according to pertinent data display, the annual quantity of wastewater effluent of China is about 3.9t, and with 1% increasing rate.China is papermaking rich and influential family, and paper waste quantity discharged is large.At present, there is large, medium and small paper mill sum more than 10000 family in China, and year, waste discharge amount was up to more than 40 hundred million m ³, account for 1/6th of national waste water total release, the BOD annual emissions in paper waste more than 200 ten thousand tons, account for national waste water always discharge in BOD 25%.

Paper industry is that energy consumption, material consumption are high, one of industry that environmental pollution is serious, and its polluting property is that wastewater discharge is large, and wherein COD, suspended substance (SS) content are high, and colourity is serious.The large-scale papermaking enterprise of current most domestic has waste water disposal facility, but the not treated direct discharge had or below standard discharge, some small-sized paper mills just do not have waste water disposal facility at all, and waste water directly enters periphery river, cause have a strong impact on to surrounding enviroment.Thus to realize the Sustainable development of paper industry, the pollution problem of paper industry must be solved comprehensively.The treatment system of paper waste is a lot, is summed up the combination mainly containing physical treatment process, method of chemical treatment, biological treatment and these three kinds of systems.In paper waste, suspended substance, turbidity, colourity are three kinds of topmost contamination indexs, and three kinds of contamination index's numerical value are very high, are the major objectives of pulping wastewater treatment, are also difficult point places.

Utility model content

For the deficiencies in the prior art, the utility model provides a kind of physically pretreatment system of paper mill effluent, and this system comprises adjustment water collecting basin, grid, settling pit, physical filtering pond, ice foot equipment, electromagnetic adsorption pond, air flotation pool, storage basin, belt filter press etc., paper mill factory effluent row mouth connects the water inlet regulating water collecting basin by pipeline, the water outlet of water collecting basin is regulated to connect the water inlet of grid by pipeline, the water outlet of grid connects the water inlet of settling pit by pipeline, the water outlet of settling pit connects the water inlet of physics filtering basin by pipeline, the water outlet in physical filtering pond connects the water inlet in electromagnetic adsorption pond by pipeline, the water outlet in electromagnetic adsorption pond connects the water inlet of ice foot equipment by pipeline, the water outlet of ice foot equipment connects the water inlet of air flotation pool by pipeline, the water outlet of air flotation pool connects the water inlet of subsequent processing device by pipeline, the mud discharging mouth of air flotation pool connects the mud inlet of storage basin by pipeline, the mud discharging mouth of storage basin connects the mud inlet of belt filter press by travelling belt, wherein, in physical filtering pond, filtrate adopts Folium Pterocaryae, useless tealeaves, Cortex walnut and pomelo peel, and four quality examples are 3:2:3:5, and filtrate is encapsulated by multiple bundle, and filtrate cumulative volume accounts for the 1/3-1/2 in physical filtering pond, electromagnetic adsorption pond is divided into low-voltage region, middle voltage regime and high-voltage region three parts, waste water flows into electromagnetic adsorption pond from low-voltage region, flow through middle voltage regime, electromagnetic adsorption pond is flowed out from high-voltage region, 220v power supply is accessed in electromagnetic adsorption pond, built-in stainless steel electrode, interval 20cm between electrode, the external refrigerator of ice foot equipment, on ice foot equipment two side, some wedge shape ice foot bars are fixed at interval, wedge shape pitch angle is 15 degree, face of slope is provided with eyelet, eye diameter 0.3cm, each perforated interval 1cm, can be filled with the water of 1t in every root ice foot bar, and ice foot equipment internal thermometer, under meter, pressure warning unit, level indicator, the temperature in ice foot equipment is subzero 2-10 DEG C.

In electromagnetic adsorption pond, low-voltage region electrode voltage is set to 5v, and middle voltage regime electrode voltage is set to 20v, and high-voltage region electrode voltage is set to 50v, and electromagnetic adsorption pond pool wall is cement structures, and is brushed with insulation compound.

Ice foot equipment inner wall is provided with thermal insulation coat.

The wedge shape ice foot bar quantity that on ice foot equipment two side, interval is fixing is 4-10 root.

The utility model has the advantage of:

(1) this physical adsorption treatment system is not added any chemical reagent, is not adopted any bioremediation, and the mud that do not induce one, bacterial classification avoid the secondary pollution of water body, reduces difficulty and the bulk treatment cost of subsequent disposal, simple to operate.

(2) this physical adsorption treatment system adopts low-energy-consumptienvironment-friendlyhigh-precision environment-friendlyhigh-precision ice foot equipment, it is applied in paper-making effluent treating process and still belongs to the first time, and serves innovation effect, the organism that difficulty exclusive in paper waste is removed and the removal effect of small solid suspended substance obvious, and equipment investment cost is little, structure is simple, and add without chemical reagent, inner water can be recycled, without the need to process, easy to operate, practical rate is high, fully automated process.

(3) in the paper waste by native system process, the clearance of suspended substance reaches 98.1%, chroma removal rate 95.1%, turbidity removal rate 98.8%.

(4) mud decreases 4/5, significantly reduces enterprise's sludge treatment burden, substantially avoided the secondary pollution problem that mud brings.In addition, the output investment ratio conventional activated sludge process of this technology saves 20%, takes up an area saving 30%, and working cost saves 10%, and thus centering small paper mill is more with practical value.

(5) advanced technology, maturation, adaptable to change of water quality, stable, can ensure that effluent quality reaches the requirement that factory uses standard and national wastewater discharge standard.Reduce initial cost and working cost, save floor space and reduce energy consumption.Easy handling, flexible operation and be convenient to management.Be easy to realize automatic control, improve operational administrative level.At utmost reduce the detrimentally affect (smell, noise, aerosol etc.) to surrounding environment.

Accompanying drawing explanation

Fig. 1 is physically pretreatment system schematic diagram.

1-regulates water collecting basin, 2-grid, 3-settling pit, 4-physical filtering pond, 5-electromagnetic adsorption pond, 6-ice foot equipment, 7-air flotation pool, 14-storage basin, 15-belt filter press.

Fig. 2 is the schematic diagram of ice foot equipment.

52-refrigerator, 53-ice foot bar, 54-under meter, 55-pressure warning unit, 56-level indicator, 57-thermometer.

Embodiment

A physically pretreatment system for paper mill effluent as shown in Figure 1, comprises and regulates water collecting basin 1, grid 2, settling pit 3, physical filtering pond 4, electromagnetic adsorption pond 5, ice foot equipment 6, air flotation pool 7, storage basin 14, belt filter press 15.Paper mill factory effluent row mouth connects the water inlet regulating water collecting basin 1 by pipeline, the water outlet of water collecting basin 1 is regulated to connect the water inlet of grid 2 by pipeline, the water outlet of grid 2 connects the water inlet of settling pit 3 by pipeline, the water outlet of settling pit 3 connects the water inlet of physics filtering basin 4 by pipeline, the water outlet in physical filtering pond connects the water inlet in electromagnetic adsorption pond by pipeline, the water outlet in electromagnetic adsorption pond connects the water inlet of ice foot by pipeline, the water outlet of ice foot connects the water inlet of air flotation pool by pipeline, the water outlet of air flotation pool 7 connects the water inlet of subsequent reactions equipment by pipeline, the mud discharging mouth of air flotation pool 7 connects the mud inlet of storage basin 14 by pipeline, the mud discharging mouth of storage basin 14 connects the mud inlet of belt filter press 15 by travelling belt.Wherein, in physical filtering pond 4, filtrate adopts Folium Pterocaryae, useless tealeaves, Cortex walnut and pomelo peel, and four mass ratios are 3:2:3:5, and filtrate is encapsulated by multiple bundle, and filtrate cumulative volume accounts for the 1/3-1/2 in physical filtering pond.Electromagnetic adsorption pond 5 is divided into three parts, low-voltage region, middle voltage regime, high-voltage region, each region is provided with valve, waste water flows into electromagnetic adsorption pond 5 from low-voltage region, flows through middle voltage regime, flows out electromagnetic adsorption pond 5 from high-voltage region, 220v power supply is accessed in voltage adsorption tank 5, built-in stainless steel electrode, electrode is furnished with resistance, interval 20cm between electrode.The external refrigerator 52 of ice foot equipment 6, on ice foot equipment two side, some wedge shape ice foot bars 53 are fixed at interval, wedge shape pitch angle is 15 degree, face of slope is provided with eyelet, eye diameter 0.3cm, each perforated interval 5cm, can be filled with the water of 1t in every root ice foot bar, and ice foot equipment internal thermometer 57, under meter 54, pressure warning unit 55, level indicator 56, the temperature in ice foot equipment is subzero 2-10 DEG C.Plant effluent regulates water collecting basin 1 through open drain from flowing into, and arranges grid 2, with the thick suspended substance that dams in open drain; Aerated grit chamber selected by settling pit 3, filters out the suspended substances such as the silt in waste water; Waste water flows into physics filtering basin 4 by pipeline after settling pit 3 flows out, and through the media filtration of Folium Pterocaryae and useless tealeaves, removes the suspended substance such as pectin, micelle tiny in water; Ice foot equipment 6 is freezed by refrigerator 52, temperature in ice foot 5 equipment will be subzero 2-10 DEG C, the instant water in ice foot bar is made to become ice, ice is separated out by the eyelet on inclined-plane, form icicle, the waste water flowed down is filtered through row, at low temperatures, some organism can freeze with icicle, can be removed suspended substance and the organic pollutant of difficult removal by icicle; In electromagnetic adsorption pond 5, low-voltage region electrode voltage is set to 5v, middle voltage regime electrode voltage is set to 20v, high-voltage region electrode voltage is set to 50v, electromagnetic adsorption pond pool wall is cement structures, and be brushed with insulation compound, the electrostatic produced by electrode, be difficult to the fiber removed in planar water, the materials such as hemicellulose, make its by electrostatic interaction adsorb by electrode; With pump, waste water is squeezed into air flotation pool 7, waste water is aeration decomposing organic matter in pond; Excess sludge pump in air flotation pool 7 is squeezed into belt filter press 15 and is dewatered, to reduce sludge treatment volume.

Claims (2)

1. a physically pretreatment system for paper mill effluent, is characterized in that, this system comprises adjustment water collecting basin, grid, settling pit, physical filtering pond, ice foot equipment, electromagnetic adsorption pond, air flotation pool, storage basin, belt filter press, paper mill factory effluent row mouth connects the water inlet regulating water collecting basin by pipeline, the water outlet of water collecting basin is regulated to connect the water inlet of grid by pipeline, the water outlet of grid connects the water inlet of settling pit by pipeline, the water outlet of settling pit connects the water inlet of physics filtering basin by pipeline, the water outlet in physical filtering pond connects the water inlet in electromagnetic adsorption pond by pipeline, the water outlet in electromagnetic adsorption pond connects the water inlet of ice foot equipment by pipeline, the water outlet of ice foot equipment connects the water inlet of air flotation pool by pipeline, the water outlet of air flotation pool connects the water inlet of subsequent processing device by pipeline, the mud discharging mouth of air flotation pool connects the mud inlet of storage basin by pipeline, the mud discharging mouth of storage basin connects the mud inlet of belt filter press by travelling belt, wherein, electromagnetic adsorption pond is divided into low-voltage region, middle voltage regime and high-voltage region three parts, waste water flows into electromagnetic adsorption pond from low-voltage region, flow through middle voltage regime, electromagnetic adsorption pond is flowed out from high-voltage region, 220V power supply is accessed, built-in stainless steel electrode, interval 20cm between electrode in electromagnetic adsorption pond, the external refrigerator of ice foot equipment, on ice foot equipment two side, some wedge shape ice foot bars are fixed at interval, wedge shape pitch angle is 15 degree, face of slope is provided with eyelet, eye diameter 0.3cm, each perforated interval 1cm, can be filled with the water of 1t in every root ice foot bar, and ice foot equipment internal thermometer, under meter, pressure warning unit, level indicator.

2. the physically pretreatment system of paper mill effluent according to claim 1, is characterized in that, the wedge shape ice foot bar quantity that on ice foot equipment two side, interval is fixing is 4-10 root.