Summary of the invention
In place of it is an object of the invention to according to above-mentioned the deficiencies in the prior art, a kind of multichannel connection gang of wells for polluting water and soil reparation is provided to take out filling circulating water treatment method, this processing method by recharge unit row and drainage cell row successively alternately dislocation lay thus carry out recharging and draining, prevent from unidirectional drawing back and recharging the destruction causing the Soil structure such as soil solidifying not in time.
The object of the invention realizes being completed by techniques below scheme:
A kind of multichannel connection gang of wells for polluting water and soil reparation takes out filling circulating water treatment method, it is characterized in that the treating method comprises following steps: in the range of contaminated site to be repaired, unit row will be recharged and arrange, with drainage cell, the laying that the most alternately misplaces, wherein, described recharge unit row and recharged arm and some and described recharge the injection well casing that arm is connected and form by a level to arrange, the well-point pipe that described drainage cell row is connected to the charge for remittance arm arranged and some and described charge for remittance arm by a level forms, described alternately dislocation laying refers to well-point pipe described in injection well casing described in each row and each row very, alternately lay in even rows;It is connected recharging unit row described in each with backflow device afterwards, and each described drainage cell row is connected with captation;It is respectively started described backflow device and described captation contaminated site to be repaired is carried out injection to recharge and water-pumping/draining.
Water proof barrier is arranged in contaminated site scope outer rim to be repaired.
Described injection well casing upper end and described well-point pipe upper end are provided with water sampling valve.
Recharge described in each and be connected with described backflow device through recharging main after arm crosses, described in recharge main in be provided with main stop valve.
The described input recharging arm is provided with and recharges valve, and the outfan of described charge for remittance arm is provided with water sampling valve.
Actual repair situation according to contaminated site scope, close and reach to repair the valve that recharges requiring to recharge described in position in unit row and stop recharging and water sampling valve in described drainage cell row stops draining, and open remaining and not up to repair the valve that recharges requiring to recharge described in position in unit row and carry out recharging and water sampling valve in described drainage cell row carries out draining.
Actual repair situation according to contaminated site scope, open not up to repair and require that the described water sampling valve in the described injection well casing of position and described well-point pipe carries out recharging and draining, and close remaining and reach to repair the described water sampling valve required in the described injection well casing of position and described well-point pipe.
It is an advantage of the invention that, this processing method carries out multistage being connected based on many circuits, constitute one and take out fill system by the water and soil circulation of efficiently polluting of Valve controlling, compensate for traditional treatment method shortcoming, destruction prevented also from Soil structure such as the unidirectional soil solidifyings drawn back and recharge and cause not in time, it is ensured that the seriality for the treatment of effeciency;Save the workload of artificial injection, can work the most continuously, and achieve the refinement management carrying out different processing units row or single well-point pipe according to effluent quality difference.
Embodiment: as shown in Figure 1, 2, 3, the present embodiment is specifically related to a kind of multichannel connection gang of wells for polluting water and soil reparation and takes out filling circulating water treatment method, and this processing method comprises the steps:
(1) contaminated site is carried out preliminary survey, and mark off emphasis Polluted area according to survey data, as it is shown in figure 1, arrange a circle water proof barrier 11 to carry out repair process in the periphery of emphasis Polluted area it individually to be isolated, water proof barrier 11 gos deep into the water barrier degree of depth to the soil body;
(2) as shown in Figure 1, 2, in the region that water proof barrier 11 is drawn a circle to approve, unit row will be recharged and discharge into row with drainage cell and alternately misplace layings, i.e. lay at odd row and recharge unit row, lay drainage cell in even rows and arrange, to cover all of contaminated site;
Wherein, recharge unit row to be made up of an injection well casing 6 recharging arm 10 and the laying of some intervals, recharge arm 10 horizontally disposed on ground, the upper end of each injection well casing 6 is recharged arm 10 by water sampling valve 8 with this and is connected, by operating the closure or openness of water sampling valve 8 such that it is able to accurately control the break-make of each injection well casing 6, the original state of water sampling valve 8 is for opening;Injection well casing 6 is deeply repaired below degree of depth position to design as shown in Figure 2,3 and is among water-bearing layer, thus ensures in the case of persistent loop, repairs all above region of the degree of depth and all can contact with medicament;The input recharging arm 10 is disposed with effusion meter 3, Pressure gauge 4 and recharges valve 5, wherein recharges valve 5 and is specially three-way valve, can external pressue device;
The well-point pipe 14 that drainage cell row is laid by a charge for remittance arm 15 and some intervals is formed, charge for remittance arm 15 is horizontally disposed on ground, the upper end of each well-point pipe 14 is connected with this charge for remittance arm 15 by water sampling valve 8, by operating the closure or openness of water sampling valve 8 such that it is able to accurately control the break-make of each well-point pipe 14 and the water body flowed through at this carries out sample detecting, the original state of water sampling valve 8 is for opening;Well-point pipe 14 gos deep into as shown in Figure 2 to water-bearing layer;The outfan of charge for remittance arm 15 is disposed with water sampling valve 8, Pressure gauge 4, vacuum pump 7 and effusion meter 3, and wherein, the break-make of entire row well-point pipe 14 can be operated by water sampling valve 8 herein, and can detect the water quality flowed through at this;
It should be noted that, the mode that each row's well-point pipe 14 uses dislocation to lay with each row's injection well casing 6, the most as shown in Figure 1, 2, each well-point pipe 14 in drainage cell row is all arranged between adjacent two the injection well casings 6 recharged in unit row, thus realize complementation, draw water simultaneously and recharge, between well-point pipe 14 and injection well casing 6, forming a continuous print Hydraulic Circulation, accelerating replacing velocity and the response speed of medicament of circulation solution;
(3) as shown in Figure 1, 2, recharge main 9 together after being crossed by the input respectively recharging arm 10 to be connected, the other end recharging main 9 is then connected with backflow device 1, and is provided with main stop valve 2 on the pipeline recharging main 9, for controlling to recharge the break-make of main 9;
Being connected with charge for remittance main 12 after being crossed by the outfan of each charge for remittance arm 15, the other end of charge for remittance main 12 is then connected with captation 13, is used for reclaiming contaminant water and carrying out sewage disposal;
(4) as Figure 1-3, wait to take out after filling circular water treating system installs and connect, Polluted area carried out repair process:
Opening the water sampling valve 8 on each drainage cell row and vacuum pump 7 draws water, sewage imports in charge for remittance main 12 through each well-point pipe 14, and collected sewage is processed by captation 13;
Effusion meter 3 on charge for remittance arm detects when the water outlet water yield is less, open recharge on main 9 recharge main valve 2 and respectively recharge unit row in recharge valve 5, pressurizeed in each injection well casing 6 by backflow device 1 and pour into medicament or clear water, make medicament enter in pollution water and soil and react;Keep the operation of vacuum pump 7 simultaneously, drawn water by control and regulation and recharge efficiency, making water outlet and the amount of recharging tend towards stability, and maintain this operational situation, between well-point pipe 14 and injection well casing 6, form a continuous print Hydraulic Circulation, accelerate replacing velocity and the response speed of medicament of circulation solution;
(5) as Figure 1-3, during water-pumping/draining, utilize the water sampling valve 8 on charge for remittance arm 15 that effluent quality is carried out periodic detection, after the effluent quality in all well-point pipes 14 meets and repairs requirement, then twice of circulation clear water continuously;
Owing to contaminated site region is relatively big and geological conditions has difference, exist and repair uneven situation, i.e., regional area reaches to repair and requires and the regional area situation that not up to reparation requires, thus, use point method discharging into row reparation further, such as, as shown in Figure 1, 1st, in the sphere of action recharging unit row and drainage cell row of 2 rows, water and soil not up to repairs requirement, and water and soil reaches to repair requirement in the sphere of action of remaining element row, the water sampling valve 8 closed the most respectively in remaining element row on charge for remittance arm 15 and recharge and recharge valve 5 on arm 10, afterwards the drainage cell row recharging unit row and the 2nd row of the 1st row is further recharged and the pollution amelioration process of pump drainage polluting water and soil according to the method described in step (4), till detection reaches to repair requirement;
Certainly, for water and soil not up to pollution amelioration requirement in the sphere of action of indivedual injection well casings 6 and well-point pipe 14, remaining region all reaches the situation that pollution amelioration requires, then use the method that single tube carries out repairing, such as, open the water sampling valve 8 on area to be repaired injection well casing 6 and the water sampling valve 8 on area to be repaired well-point pipe 14, and close remaining injection well casing 6, water sampling valve 8 on well-point pipe 14, afterwards the injection well casing 6 at indivedual areas to be repaired and well-point pipe 14 are further recharged and the pollution amelioration process of pump drainage polluting water and soil according to the method described in step (4), till detection reaches to repair requirement.
Having the beneficial effects that of the present embodiment:
(1) extracting and recharge and carry out simultaneously, forming local hydraulic circulation, the efficiency of relatively conventional unidirectional processing method is more preferable, and cleaning and removal effect to pollutant are more preferable;
(2) described system takes out filling continuously, prevents unidirectional extracting and recharges the destruction of soil solidifying and the Soil structure caused not in time, it is ensured that the seriality for the treatment of effeciency.
(3) described system flexible operation, can carry out individual unit row's process, the control of the most single well point and management by valve respectively;
(4) recharging compared to the single injection of Traditional Man, this processing method efficiency is higher, saves a large amount of manpower, and can run with round-the-clock;
(5) treatment effect and processing cost are relatively low, especially preferable to there being certain area pollution effects that homogenizes, and are dynamically adjusted processing region scope by effluent quality, it is made progressively to reduce, more targeted, save the medicament waste that low level management brings, it is achieved that fine-grained management.