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DE3425791A1
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Apparatus and process for upgrading water, waste water, particularly stagnant contaminated waste water
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DE3417039A1
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Apparatus for introducing a solid, liquid or gaseous treatment substance/nutrient into water, waste water
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DE3407370A1
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Apparatus for introducing solid, liquid or gaseous treatment agent/nutrient into water, waste water
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Device for introducing solid, liquid or gaseous treatment substance/nutrient into water, waste water
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Apparatus for treating contaminated water
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Device for introducing solid, liquid or gaseous treatment substances for upgrading polluted water
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Device for the introduction of gaseous, liquid or solid treatment agents for the improvement of polluted water
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DEVICE FOR THE INTRODUCTION OF SOLID, LIQUID OR GASEOUS TREATMENT SUBSTANCES TO IMPROVE POLLUTED WATER, USING A DRIVEN AXIAL WHEEL, PROPELLERS OR DGL.
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Embankment surface reinforcing device - has slabs aligned and positioned by brackets driven into ground and clamps at top
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Polluted water aeration - through submersed mixing chamber for compressed air and water, with expansion nozzle
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FURNISHING OR METHODS FOR THE BIOLOGICAL PURIFICATION OF SEWER OR WATER IN SEWING POOLS OR SEWING POOLS OR POND AND LAKES OR RIVERS
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DE2301726A1
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Biological liq. effluent treatment plant - contg. series of aeration pipes, liq. preheater and premixer or preaerator
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